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# Basic syntax:
:%s/character/\r/g # note, use \r instead of \n
# Example usage:
# Say you have a file with a line this and you want all parameters on different
# lines:
<param_1> <param_2> <param_3> <param_4>
# You could run:
:%s/ /\r/g # to get:
<param_1>
<param_2>
<param_3>
<param_4>
# Or you could run something like:
%s/<> </\r:/g # to get:
<param_1:
param_2:
param_3:
param_4> # which saves you some work if you also want to delete the separators