GWBASIC User's Manual

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GW-BASIC <strong>User's</strong> Guide CLS Statement Purpose: To clear the screen. Syntax: CLS [n] Comments: n is one of the following values: Value of n Effect 0 Clears the screen of all text and graphics 1 Clears only the graphics viewport 2 Clears only the text window If the graphics viewport is active, CLS without argument clears only the viewport. If the graphics viewport is inactive, CLS clears the text window. If the screen is in alpha mode, the active page is cleared to the currently selected background color (see the SCREEN and COLOR statements). If the screen is in graphics mode, the entire screen buffer is cleared to background color. The screen may also be cleared by pressing CTRL-HOME, or by changing the screen mode with the SCREEN or WIDTH statements. CLS returns the cursor to the upper-left corner of the screen, and sets the last point referenced to the center of the screen. If the VIEW statement has been used, CLS clears only the last viewport specified. Examples: 1 CLS This clears the screen. file:///C|/Documents%20and%20Settings/Lorenzo/Desktop/GW%20Basic/CLS.html28/03/2004 21.29.18
GW-BASIC <strong>User's</strong> Guide COM(n) Statement Purpose: To enable or disable trapping of communications activity to the specified communications adapter. Syntax: COM(n) ON COM(n) OFF COM(n) STOP Comments: n is the number of the communications adapter 1 or 2. Execute a COM(n) ON statement before ON COM(n) statement to allow trapping. After COM(n) ON, if a nonzero number is specified in the ON COM(n) statement, BASIC checks every new statement to see if any characters have come in the communication adapter. With COM(n) OFF, no trapping takes place, and all communications activity will be lost. With COM(n) STOP, no trapping takes place. However, any communication that takes place will be remembered so that immediate trapping will occur when COM(n) ON is executed. file:///C|/Documents%20and%20Settings/Lorenzo/Desktop/GW%20Basic/COMN.html28/03/2004 21.29.19
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GWBASIC User's Manual User's Guide
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GWBASIC User's Manual FILES Command
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GWBASIC User's Manual PSET Statemen
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GW-BASIC User's Guide Chapter 1 Wel
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GW-BASIC User's Guide The Glossary
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GW-BASIC User's Guide 2.2.2 Indirec
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GW-BASIC User's Guide Sample GW-BAS
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GW-BASIC User's Guide system assume
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GW-BASIC User's Guide Note Reuse of
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GW-BASIC User's Guide moves the cha
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GW-BASIC User's Guide CTRL-G Causes
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GW-BASIC User's Guide BASIC User's
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GW-BASIC User's Guide Note ↵ (arr
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GW-BASIC User's Guide Appendix H Ke
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GW-BASIC User's Guide KEY(n) n is a
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GW-BASIC User's Guide STRIG Trappin
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GW-BASIC User's Guide KEY(n) Statem
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GW-BASIC User's Guide LOC(x) Return
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GW-BASIC User's Guide 15 KEY OFF:CL
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GW-BASIC User's Guide and check the
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GW-BASIC User's Guide Chapter 3 Rev
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GW-BASIC User's Guide until the RUN
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GW-BASIC User's Guide To save a fil
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GW-BASIC User's Guide Hexadecimal H
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GW-BASIC User's Guide The GW-BASIC
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GW-BASIC User's Guide The arithmeti
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GW-BASIC User's Guide Modulus arith
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GW-BASIC User's Guide EQV X Y X EQV
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GW-BASIC User's Guide RUN FILENAME
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GW-BASIC User's Guide OPTION BASE S
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GW-BASIC User's Guide LET Statement
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GW-BASIC User's Guide . . 400 R=1:
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GW-BASIC User's Guide ● Sequentia
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GW-BASIC User's Guide The program i
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GW-BASIC User's Guide PUT #1, CODE%
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GW-BASIC User's Guide number. Lines
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GW-BASIC User's Guide Appendix A Er
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GW-BASIC User's Guide 18 Undefined
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GW-BASIC User's Guide 59-60Unprinta
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GW-BASIC User's Guide 75 Path/File
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GW-BASIC User's Guide Appendix C AS
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GW-BASIC User's Guide Appendix D As
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GW-BASIC User's Guide moved the cur
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GW-BASIC User's Guide that the code
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GW-BASIC User's Guide converted to
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GW-BASIC User's Guide DEF USR State
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GW-BASIC User's Guide USR Function
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GW-BASIC User's Guide E.3 Multiple
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GW-BASIC User's Guide 8 8 18 24 90
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GW-BASIC User's Guide _ Underscore.
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GW-BASIC User's Guide Data represen
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GW-BASIC User's Guide binary system
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GW-BASIC User's Guide computers or
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GW-BASIC User's Guide double-precis
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GW-BASIC User's Guide graphics A ha
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GW-BASIC User's Guide precisely ref
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GW-BASIC User's Guide An extra-bit
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Page 117 and 118: GW-BASIC User's Guide ABS Function
Page 119 and 120: GW-BASIC User's Guide CHR$ Function
Page 121 and 122: GW-BASIC User's Guide AUTO Command
Page 123 and 124: GW-BASIC User's Guide BLOAD Command
Page 125 and 126: GW-BASIC User's Guide BSAVE Command
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Page 129 and 130: GW-BASIC User's Guide CDBL Function
Page 131 and 132: GW-BASIC User's Guide INT Function
Page 133 and 134: GW-BASIC User's Guide CHAIN Stateme
Page 135 and 136: GW-BASIC User's Guide MERGE Command
Page 137 and 138: GW-BASIC User's Guide CIRCLE Statem
Page 139 and 140: GW-BASIC User's Guide COLOR Stateme
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Page 145 and 146: GW-BASIC User's Guide SCREEN 10 ●
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Page 151 and 152: GW-BASIC User's Guide Enhanced d EG
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Page 155 and 156: GW-BASIC User's Guide LINE Statemen
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Page 161 and 162: GW-BASIC User's Guide PRESET and PS
Page 163 and 164: GW-BASIC User's Guide CLEAR Command
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Page 169 and 170: GW-BASIC User's Guide CONT Command
Page 171 and 172: GW-BASIC User's Guide CSRLIN Variab
Page 173 and 174: GW-BASIC User's Guide CVI, CVS, CVD
Page 175 and 176: GW-BASIC User's Guide DATA Statemen
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Page 185 and 186: GW-BASIC User's Guide POKE Statemen
Page 187 and 188: GW-BASIC User's Guide EDIT Command
Page 189 and 190: GW-BASIC User's Guide ENVIRON State
Page 191 and 192: GW-BASIC User's Guide ENVIRON$ Func
Page 193 and 194: GW-BASIC User's Guide SHELL Stateme
Page 195 and 196: GW-BASIC User's Guide EOF Function
Page 197 and 198: GW-BASIC User's Guide ERDEV and ERD
Page 199 and 200: GW-BASIC User's Guide ERROR Stateme
Page 201 and 202: GW-BASIC User's Guide EXP Function
Page 203 and 204: GW-BASIC User's Guide FIELD Stateme
Page 205 and 206: GW-BASIC User's Guide GET Statement
Page 207 and 208: GW-BASIC User's Guide FOR ... NEXT
Page 209 and 210: GW-BASIC User's Guide FRE Function
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Page 213 and 214: GW-BASIC User's Guide GOTO Statemen
Page 215 and 216: GW-BASIC User's Guide OCT$ Function
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GW-BASIC User's Guide Testing Equal
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GW-BASIC User's Guide 1070 TIMEOUT%
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GW-BASIC User's Guide INPUT Stateme
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GW-BASIC User's Guide PRINT Stateme
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GW-BASIC User's Guide STRING$ Funct
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GW-BASIC User's Guide PRINT USING S
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GW-BASIC User's Guide ** A double a
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GW-BASIC User's Guide WIDTH Stateme
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GW-BASIC User's Guide INPUT# Statem
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GW-BASIC User's Guide 100 PRINT "TY
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GW-BASIC User's Guide IOCTL Stateme
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GW-BASIC User's Guide KILL Command
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GW-BASIC User's Guide MID$ Function
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GW-BASIC User's Guide LEN FUNCTION
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GW-BASIC User's Guide LINE INPUT# S
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GW-BASIC User's Guide LLIST Command
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GW-BASIC User's Guide LOC Function
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GW-BASIC User's Guide Makes the cur
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GW-BASIC User's Guide It is expecte
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GW-BASIC User's Guide LOG Function
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GW-BASIC User's Guide MID$ Statemen
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GW-BASIC User's Guide NAME Command
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GW-BASIC User's Guide ON ERROR GOTO
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GW-BASIC User's Guide ON ... GOSUB
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GW-BASIC User's Guide reclen is an
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GW-BASIC User's Guide ● Files may
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GW-BASIC User's Guide RESET Command
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GW-BASIC User's Guide Examples: The
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GW-BASIC User's Guide when using GE
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GW-BASIC User's Guide PCOPY Command
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GW-BASIC User's Guide n = 5 Returns
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GW-BASIC User's Guide . (period) A
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GW-BASIC User's Guide PMAP Function
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GW-BASIC User's Guide The following
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GW-BASIC User's Guide If the string
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GW-BASIC User's Guide PUT Statement
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GW-BASIC User's Guide RANDOMIZE Sta
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GW-BASIC User's Guide RND Function
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GW-BASIC User's Guide . . . 129 FOR
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GW-BASIC User's Guide RESUME Statem
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GW-BASIC User's Guide RMDIR Command
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GW-BASIC User's Guide SAVE Command
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GW-BASIC User's Guide SGN Function
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GW-BASIC User's Guide SOUND Stateme
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GW-BASIC User's Guide SPACE$ Functi
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GW-BASIC User's Guide SQR Function
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GW-BASIC User's Guide STOP Statemen
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GW-BASIC User's Guide VAL Function
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GW-BASIC User's Guide STRIG(n) Stat
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GW-BASIC User's Guide SYSTEM Comman
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GW-BASIC User's Guide TAN Function
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GW-BASIC User's Guide 08:00:05 The
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GW-BASIC User's Guide TRON/TROFF Co
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GW-BASIC User's Guide 0 1 Mode The
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GW-BASIC User's Guide VARPTR$ Funct
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GW-BASIC User's Guide The following
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GW-BASIC User's Guide WAIT Statemen
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GW-BASIC User's Guide WINDOW Statem
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GW-BASIC User's Guide WRITE Stateme
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GWBASIC User's Manual

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