"add functions" is a correct and usable part of a sentence in written English.
You could use it in a sentence like "This program has been updated to add new functions."
But the CLIE's designers say they have tweaked the Palm system to add functions.
The agreement is the first for the cellular phone industry, which is eager to add functions to phones to bring in additional revenue.
The new online applications add functions to that basic browser ability by using a set of software tools known among developers as Ajax.
Some readers expect makers of electronic devices to add functions that allow users to broadcast what they're reading.
Apps add functions to a phone, like maps that give audible directions, a stock ticker or a game like Angry Birds.
Even so, there are always folk willing to take the risk, to add functions and features to their phones that are not normally available.
They have time to add function to their flair - of which they have plenty.
These results suggest the strategic use of surface carboxylation in nanotube applications where biodegradation may improve safety or add function.
A surgery to add function to the clitoris, such as metoidioplasty, is an alternative to phalloplasty that permits retention of sexual sensation in the clitoris.
The add function then returns the results to main.
The main function collects the integers from the user and then sends them to the add function to be processed.
