I use \subsection*{title} for the titles of my document, and then I write the text. The text have indentation on the beginning of the paragraph and the margin is the same for \subsection* and for the text.
I don't want the indentation (so I put \setlength{\parindent}{0pt} on the preamble), and I don't want the text to be aligned with my titles and that's the problem.
I don't know how to change the left-margin just for text on \subsection*, on the preamble. Perhaps titlesec package can fix it but I don't know how to use it (and I don't know if I can use it on article class, all the posts I found for it is in report class).
\subsections do you have like this? Is it something that necessarily has to be automated? – Werner Feb 15 '18 at 16:27{\cmd my text}, it would resolve the problem... Just change the left-margin of the global text without changing the margins of titles. – Philippe Feb 21 '18 at 21:29