Live templates
Using live templates, you can quickly insert a predefined piece of text by typing just a few characters of a certain key. You can denote places to which the cursor skips when you press Tab after inserting the live template.
To use a live template, type (a part of) the key, for example fig, hit enter when the live template is suggested in the autocomplete, type things and use Tab to skip to the next place to type information.
Currently implemented by default are live templates for:
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figures, tables, itemize, enumerate, and in math for summations and integrals;
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sectioning with automatic label (triggered with
\partl,\chapl,\secl, etc.).
You can find these live templates, as well as add your own, under File › Settings › Editor › Live Templates › LaTeX.
For more information, see https://www.jetbrains.com/help/idea/creating-and-editing-live-templates.html