There are three kinds of editable text box items available:
Single-line Text —default for string parameters; pressing the Tab or Enter keys moves to the next control.
Multi-line Text —pressing the Enter key adds a carriage return inside the box.
Text Editor Widget —customizable Scintilla editing component which supports syntax styling, auto-completion, folding (hiding blocks such as functions and subroutines), etc.
The user can change the text that appears in these controls directly, but they can also be changed dynamically through Logic (see Dynamically Changing Custom Properties).