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      Leaders is a line or spline with arrowhead at one end, and annotations (Mtext, blocks as well as tolerance) at the other end.

     Generally, you place an arrowhead at the first point. An annotation, created as dimension text, is placed immediately adjacent to the last point.

Create a Leader Line

      You can use LEADER or QLEADER to create a leader and control the appearance. The color of a leader is controlled by the color of the current dimension line. The scale is controlled by the global dimension scale specified on the current dimension style. The appearance of a leader is control by the setting of the first arrowhead on the current dimension style.

Add Text to a Leader

  There are two methods to add text to a leader:

• Types text on the command line

• Using multiline text editor creates multiline text.

     When creating text, you can assign the style to an individual character and attach the copies of the current annotation to the leader.

     When the value of variable system DIMGAP is negative, the system creates a box next to the text, which the distance between them is determined by the value of DIMGAP.

       The text is placed automatically at the endpoint of a leader at the specified value, which is stored in the "Offset from dim line" on the Text tab of Modify Dimension Style dialog box. If the dimension is tolerance, the future control frame is placed at the endpoint of a leader as well. A block is inserted at the specified location with the specified scale value.

To create a leader and an annotation

1. Choose Dimensions > Leader.

2. Specify the starting point of the leader.

3. Specify the endpoint of the leader line segment.

4. Specify additional leader line segment endpoints.

5. After you specify the last endpoint, press Enter.

6. Type the annotation, and press Enter to enter the Next line of annotation text.

7. Press ENTER to complete the command.

Command line LEADER

     The following picture shows the text is above at the leader. You can set the justification at the Text tab on the Modify Dimension Style.

Commands Reference

LEADER: Creates a line that connects annotation to a feature

QLEADER: Creates a leader and leader annotation

DDEDIT: Edits text, dimension text, attribute definitions, and feature control frames

DIMSTYLE: Creates and modifies dimension styles

MTEXT: Creates multiline text

OPTIONS: Customizes the ZWCAD settings

PROPERTIES: Controls properties of existing objects

PURGE: Removes unused named items, such as block definitions and layers, from the drawing

QTEXT: Controls the display and plotting of text and attribute objects

STYLE: Creates, modifies, or sets named text styles

TEXT: Creates a single-line text object

System Variables Reference

DIMASZ: Controls the size of dimension line and leader line arrowheads

DIMCLRD: Assigns colors to dimension lines, arrowheads, and dimension leader lines

DIMLDRBLK: Specifies the arrow type for leaders

DIMSCALE: Sets the overall scale factor applied to dimensioning variables that specify sizes, distances, or offsets

DIMTAD: Controls the vertical position of text in relation to the dimension line

DIMGAP: Sets the distance around the dimension text when the dimension line breaks to accommodate dimension text

FONTALT: Specifies the alternate font to be used when the specified font file cannot be located

FONTMAP: Specifies the font mapping file to be used

MTEXTED: Sets the primary and secondary text editors to use for multiline text objects

QTEXTMODE: Controls how text is displayed

TEXTFILL: Controls the filling of TrueType fonts while plotting and rendering

TEXTQLTY: Sets the resolution tessellation fineness of text outlines for TrueType fonts while plotting and rendering