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The Online World resources handbook

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Your first trip online. Typical pitfalls and simple solutions http://home.eunet.no/~presno/bok/v3.html<br />

local disk."<br />

You are downloading, when you call a bulletin board to retrieve a program.<br />

When you, overwhelmed by gratitude, send one of your favorite programs back TO the<br />

bulletin board, we call it uploading.<br />

Data can be many things. It may be news from the Washington Post, a digital picture, an<br />

executable program, a pile of invoices, a piece of music, a voice file, an animated<br />

sequence of pictures and music, or compressed library files.<br />

Downloading "plain text" (also called "plain ASCII" or "DOS text" on MS DOS<br />

machines) is relatively easy. Such text usually only contains characters between number<br />

32 (space character) and 126 (the ~ character) in the ASCII table.<br />

Characters with lower numbers have special functions (like the control characters<br />

ESCape and CTRL+C). <strong>The</strong>se may not even be displayed on your screen. Characters<br />

with higher numbers are used for graphics, special national characters, and other<br />

applications.<br />

Special transfer methods are often required, when your data contains text with<br />

characters outside ASCII number 32 through 126. Read under "Protocol transfers"<br />

below for more information about how to do this.<br />

Downloading text<br />

Most communication programs require that you begin by opening a file. <strong>The</strong>y ask you to<br />

enter a file name. From this point and onwards all incoming text will be stored in this file<br />

until you say stop.<br />

Communication programs do this in different ways. Some let incoming data flow through<br />

a temporary storage area using the principle first in, first out. When you open a file, it<br />

starts storing data from the beginning of the temporary storage area, though this text<br />

may have scrolled off your screen some time ago.<br />

Most communication programs start storing data from NOW. Procomm works this way.<br />

You start downloading of text by pressing the PgDn key. A window will appear on your<br />

screen giving you a choice between various methods. Select ASCII.<br />

In another window, you are asked to enter a file name. When done, storage of incoming<br />

data starts. You stop the process by pressing the ESC key.<br />

Procomm has another method called "file logging." You start this by pressing ALT F1.<br />

Procomm requests the file name, and the storage process starts. (Read under "Strip"<br />

about the difference between these methods.)<br />

If you forget to tell Procomm to store incoming data, then you will most<br />

probably lose this data for ever.<br />

Do not waste time and money by forgetting to store what you receive!<br />

<strong>The</strong> term "append"<br />

When downloading text or anything you must know whether you are appending<br />

information to an existing file, or overwriting it (that is, destroying the old text).<br />

Most communication programs complain with an audible signal, when you try to<br />

overwrite an existing file. <strong>The</strong>y will ask you if you really want to delete it, or append the<br />

current data.<br />

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