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The Markers and Rulers section controls the majority of the Text Editor's visual elements:

**Show Horizontal Ruler**

This option places a ruler at the top of the Editor window.

**Show column ruler**

Places a vertical line marker at whatever column you specify.

**Line Marker Style**

This option controls how your active line is displayed. Select Full Row for a special color indicator on the entire line.

**Show line numbers**

Activate this option to show line numbers on the left side of the editor window.

**Underline errors**

Activating this option will trigger an underlining of any errors produced by the compiler.

**Highlight matching bracket**

This option locates and highlights matching brackets whenever any bracket is active. This option is valid for ( ) [ ] { }

**Show invalid lines**

Activate this option to show invalid lines detected by the type of configuration that you have loaded. Using the "Clarion" highlighting scheme (the default), no lines are considered invalid.

**Show EOL markers**

Activate this option to show the "end of line" markers. These markers are identified by the special paragraph mark "¶"

**Show spaces**

Activate this option to show space markers. These markers are identified by standard "dot" markers.

**Show tabs**

Activate this option to show tab markers. These markers are identified by the special " **»** " character.