You may edit a paragraph consisting of several lines. When finished editing, some lines may be shorter than required. To fix this, in normal mode, type gqip to format the "inner paragraph". In this context, "format" means to reflow the paragraph so that all lines are the optimal length. Alternatively, format options can be set so that a paragraph is reflowed automatically, after each change. [help auto-format] An example setting for formatoptions (fo) is: :setl fo=aw2tq