TeX/indent
Synopsis
\indent
Description
If TeX is in vertical or internal vertical mode, then \indent will force TeX into horizontal mode, and in either case an empty box of length \parindent is added to the current list.
\indent
If TeX is in vertical or internal vertical mode, then \indent will force TeX into horizontal mode, and in either case an empty box of length \parindent is added to the current list.