If a text frame is selected: positions the cursor to the end of the text in the text frame. If you press any key that produces a character on screen, and the document is in edit mode, the character is appended to the text.
如果选定了文本框：将光标置于文本框中的文字末尾。如果按任意文字键，且文档处于编辑模式，则该字符将被附加到文字中。