Code folding feature enables you to collapse blocks of code such that only the first line of the block appears in Editor.
A block of code that can be folded is indicated by an icon to the left of the first line of the block. A vertical line extends from the icon to the bottom of the foldable code. In contrast, a folded block of code is indicated by an icon
to left of the code block. You can fold the block by clicking
or expand it by clicking
in Editor.