What does SL represent in SLComposeViewController in iOS?

Question

I searched a number of sites to find out what does SL in SLComposeViewController represent or stand for? IMO, it represents Social Linking. But I couldn't confirm it anywhere on the internet.

Answer 1

Its just SOCIAL Compose View Controller. SL stands Social.

Update: http://nshipster.com/namespacing/

Answer 2

It's part of the Social framework so SL is the abbreviation for SociaL.

Answer 3

How about "Social Layer" or "Social Library"?

From documentation, SL* classes allow to do lots of things, such as:

"Create a network session. Get the activity feed for a user. Make a new post. Set properties on a post, add attachments, etc. Publish a post to an activity feed."