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Text fonts must include a special shape number 0 that conveys information about the font itself.
AutoCAD is packaged with numerous text fonts. You can use the STYLE command to apply expansion, compression, or obliquing to any of these fonts, thereby tailoring the characters to your needs. You can draw text of any height, at any baseline angle, and with either horizontal or vertical orientation using these fonts.
AutoCAD text fonts are files of shape definitions with shape numbers corresponding to the ASCII code for each character. Codes 1 through 31 are for control characters, only one of which is used in AutoCAD text fonts:
- 10 (LF)
-
The line feed (LF) must drop down one line without drawing. This is used for repeated TEXT commands, to place succeeding lines below the first one.
You can modify the spacing of lines by adjusting the downward movement specified by the LF shape definition.
Text fonts must include a special shape number 0 that conveys information about the font itself. The format has the following syntax:
*0,4,font-name
above,below,modes,0
The above value specifies the number of vector lengths above the baseline that the uppercase letters extend, and below indicates how far the lowercase letters descend below the baseline. The baseline is similar in concept to the lines on writing paper. These values define the basic character size and are used as scale factors for the height specified in the TEXT command.
The modes byte should be 0 for a horizontally oriented font and 2 for a dual-orientation (horizontal or vertical) font. The special 00E (14) command code is honored only when modes is set to 2.
The standard fonts supplied with AutoCAD include a few additional characters required for the AutoCAD dimensioning feature.
%%p Plus/minus tolerance symbol (±)
%%c Circle diameter dimensioning symbol
You can use these and the %%nnn control sequences, as described under TEXT in the Command Reference.
*65,11,uca
024,043,04d,02c,2,047,1,040,2,02e,0
Because the shape name uca contains lowercase letters, AutoCAD doesn't save the name in memory. However, you can use the name for reference when editing the font definition file. In this example, uca stands for uppercase A.