MATLAB Function Reference Volume 1: A - E - Bad Request

clear keyword clears the items indicated by keyword.
Keyword Items Cleared
all Removes all variables, functions, and MEX-files from
memory, leaving the workspace empty. Using clear all
removes debugging breakpoints in M-files and
reinitializes persistent variables, since the breakpoints
for a function and persistent variables are cleared
whenever the M-file is changed or cleared. When issued
from the Command Window prompt, also removes the
Java packages import list.
classes The same as clear all, but also clears MATLAB class
definitions. If any objects exist outside the workspace
(e.g., in user data or persistent variables in a locked
M-file), a warning is issued and the class definition is
not cleared. Issue a clear classes function if the
number or names of fields in a class are changed.
functions Clears all the currently compiled M-functions and
MEX-functions from memory. Using clear function
removes debugging breakpoints in the function M-file
and reinitializes persistent variables, since the
breakpoints for a function and persistent variables are
cleared whenever the M-file is changed or cleared.
global Clears all global variables from the workspace.
import Removes the Java packages import list. It can only be
issued from the Command Window prompt. It cannot be
used in a function.
variables Clears all variables from the workspace.
clear('name1','name2','name3',...) is the function form of the syntax. Use
this form when the variable name or function name is stored in a string.
clear
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