How to add single line text
You can use single-line text to create one or more lines of text, where each text line is an independent object that you can move, format, or otherwise modify.
Click Menu "Draw", and then choose "Text"
Sepcify text point
Sepcify text height, or input value
Input text angle, default is 0.0
Input text width factor.
Enter the text
How to modify the existed text?
Method one
Double click the text object
Modify the text value in the right property bar.
Method two
Click Menu "Editor", and then choose "Edit Text"
Double click the text object.
Modify the value in the text editor.