Tools > Line
The Line tool allows you to draw straight lines.
1. Do one of the following:
 Choose Tools > Line
Click the Line button
2. To draw a line, click where you want the line to begin, and then drag the mouse to the place where it should end, and release the mouse button.
3. Use the following options:
Without antialiasWith antialias
Use this option to draw smooth flowing lines by shading the pixels along the borders of graphical elements.
This option allows you to set the opacity of the color, gradient, layer, or image you are working with. Opacity is the opposite of transparency. If something has an opacity value of 100%, that means it’s completely visible. An opacity value of 0% indicates that an object is completely transparent.
Line Width
Use this option to set the line width in pixels.
Line Style
Use the Line Style dialog to specify whether a line is solid or dashed, the dash sequence if it is dashed, the line width, the line alignment, the miter limit, and the styles of line joins and line caps.
Related Information
Tools > Line Style
Tools > Shapes > Grid Lines
Tools > Path > Line Before
Tools > Path > Line After
Effects > Artistic > Threshold Lines
Effects > Design > Lines
Search the Internet