What is the microphone mark next to the input method mark for?

It is a voice input method. Turn on the microphone in word and write by voice.

Are you using the native voice of office2003? If you open word-Tools-Voice Tick, microphone information will appear on the screen. Put the cursor on the surface, then press the microphone-press dictation mode-don't choose voice command mode, then you can record the flower tube, and your words will appear on the screen. I feel terrible. Attention; Only English or Chinese can be used in China. Some software doesn't support it, but Baidu can still do it.

You want to use Control Panel-Regional and Language Options-Language-Details-Click Speech Recognition-Delete-OK.