# d-lines, Qd-lines

Compiles debug statements.

## Syntax

Linux: | -d-lines -nod-lines

macOS: | -d-lines -nod-lines

Windows: | /d-lines /nod-lines /Qd-lines

## Arguments

None

## Default

nod-lines | Debug lines are treated as comment lines.

## Description

This option compiles debug statements. It specifies that lines in fixed-format files that contain a D in column 1 (debug statements) should be treated as source code.

## IDE Equivalent

Visual Studio: Language > Compile Lines With D in Column 1 (/d-lines)

## Alternate Options

Linux and macOS: -DD

Windows: None

Parent topic: Preprocessor Options