Here's a tip most people don’t know for AutoCAD. When you want to add some extra text in your dims and still keep the actual dimension without manual editing it, Use <> to keep the original text. This will keep the dimension number whatever it may be and it changes if you change the dimension, too. So you never have to manually edit the dimension. Also another tip: if you ever want to add a second line to your dimension, use P with your text immediately following (no space). The P must be capitalized. For example, say you want to have the dimension say +/- 10" (typ.),
just type +/- <>P(typ.) Try it.
NOTES FROM CADALYST TIP PATROL: Good tip and I agree, many probably don’t know about it. This tip applies to associated dimensions through the property palette. Select the dimension, open the property palette, go to the text tab, then to the Text Override field. To keep the rue dimension value, type in <> (a less-than sign and then a greater-than sign with no spaces). This is also a quick way to restore the true value to an edited dimension. The P is the same as hitting the RETURN key in a text editor. If you don’t want to use the Properties Palette, then type on the command line DDEDIT (or just ED) and select the dimension text you want to change. Typing in <> will cause the text to give the true dimension value just like it does in the Properties Palette. Of course P doesn’t work in the text editor; use the enter key. Good tip showing an alternate way of doing things.
Tested in AutoCAD 2009