https://help.tallysolutions.com/docs/td9rel54/td9/using_the_editor/syntax_coloring/syntax_color.htm

Syntax Coloring

Colors improve the readability of the code and help the programmer to write and debug the code much faster.

Code editor of Tally.Developer 9 is a TDL aware editor which uses various colors to highlight the different components of TDL.  It also helps to debug syntax errors by coloring the same, thus saving debugging time.

The various components for which the color convention is used:

Comments within the Code

Definition Types and Names

Attributes and Keywords

Actions and Functions

Syntax Errors in Code