Comments in sed
The # function introduces a comment. Text following a
comment is ignored, up to the first newline. If the last character
on the comment line is a backslash, the following line is
interpreted as a continuation of the comment, up to the first
# This sed script transforms source files written \
using the troff mm macro library into troff ms source.
This sequence has exactly the same effect as the following:
# This sed script transforms source files written
# using the troff mm macro library into troff ms source.
If the character immediately following the # character is an ``n'',
no output will be automatically generated by the script. This
construction has the same effect as the -n command line
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SCO OpenServer Release 6.0.0 -- 03 June 2005