How to modify the sample text of Mtext ?

After we execute the MTEXT command, the upper left corner would show three letters “abc” when we move the cursor,
After we execute the MTEXT command, the upper left corner would show three letters “abc” when we move the cursor,
With GstarCAD, we can not only create single line and multiline text object, but also arc-aligned text with ARCTEXT Command.
We all know that we can find or replace data such as texts and numbers in a worksheet, but do you know that we can actually do the same in GstarCAD?
The other day, one of our users asked a question: There’s something wrong with my CAD software, I can’t edit the text by double-clicking, and I have to click twice to edit the graphics.
CAD system consists of Single Line Text and Mtext. Let’s start with the very basics of Text.