+ 1,12,20,44
+
+
+</PRE><H3><a name="h3-Margins">Margins</a></H3><PRE>
+ A few terminals provide the capability for changing their left/right
+ margins. The tabs program has an option to use this feature:
+
+ <STRONG>+m</STRONG> <EM>margin</EM>
+ The effect depends on whether the terminal has the margin
+ capabilities:
+
+ <STRONG>o</STRONG> If the terminal provides the capability for setting the left
+ margin, tabs uses this, and adjusts the available width for
+ tab-stops.
+
+ <STRONG>o</STRONG> If the terminal does not provide the margin capabilities, tabs
+ imitates the effect, putting the tab stops at the appropriate
+ place on each line. The terminal's left-margin is not
+ modified.
+
+ If the <EM>margin</EM> parameter is omitted, the default is 10. Use <STRONG>+m0</STRONG> to
+ reset the left margin, i.e., to the left edge of the terminal's
+ display. Before setting a left-margin, tabs resets the margin to
+ reduce problems which might arise on moving the cursor before the
+ current left-margin.
+
+ When setting or resetting the left-margin, tabs may reset the right-
+ margin.