adding Google input tools to Google Docs

If we want to type in Indian languages, Google's input tools are a good option for transliteration of Indic scripts. For enabling them inside Google Docs toolbar, the procedure is to go to

Google Account --> Personal Info --> General Preferences for the Web --> Input tools 

and enable the languages you want. There is no need to enable English in my case, since my default keyboard settings are English. But we can enable English handwriting input etc if needed, if we're using a tablet etc.