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52.10 Usual Display Conventions

The usual display conventions define how to display each character code. You can override these conventions by setting up a display table (see Display Tables). Here are the usual display conventions:

The usual display conventions apply even when there is a display table, for any character whose entry in the active display table is nil. Thus, when you set up a display table, you need only specify the characters for which you want unusual behavior.

These variables affect the way certain characters are displayed on the screen. Since they change the number of columns the characters occupy, they also affect the indentation functions.

User Option: ctl-arrow

This buffer-local variable controls how control characters are displayed. If it is non-nil, they are displayed as a caret followed by the character: ‘^A’. If it is nil, they are displayed as a backslash followed by three octal digits: ‘\001’.

Variable: default-ctl-arrow

The value of this variable is the default value for ctl-arrow in buffers that do not override it. See Default Value.

User Option: tab-width

The value of this variable is the spacing between tab stops used for displaying tab characters in SXEmacs buffers. The default is 8.

Note: This feature is completely independent from the user-settable tab stops used by the command tab-to-tab-stop. See Indent Tabs.


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