In large codes, it is easier to navigate in folded code snippets. To fold we have several methods

• To fold manually, just use :set foldmethod=manual, and to fold a code snippet, just select the code in visual mode and press zf, to unfold you can use zo and l. To toggle back to folded view just use za back and forth.
• Folds are not saved as you quit file, so before quitting you must ensure to use the editor command :mkview, opening file once again after quitting , use :loadview to see the folds.
• To delete all the folds just use zD, to delete one fold use zd.

It is fastest way to fold the Indented content. To use this method , :set foldmethod=indent
Depending upon the cursor, it will automatically fold the indented blocs.