indexw with 3 parts inputs

[stataq]

Hello,

I am learning indexw. I understand that it is used t o find a word. So following codes is finding upcase(put(&_colvar,&_cfmt)) within "&_collvl"? what ' +' for? 

Did I interpreted wrong? 

indexw("&_collvl",upcase(put(&_colvar,&_cfmt)),' +') 

[PaigeMiller · Accepted solution]

These are the sorts of questions that the documentation will explain quickly and thoroughly. Examples similar to yours are given.

The ' +' are the delimiters which separate "words". So a space or a + sign is considered to be the separator between two "words".