Studs

Studs represent a measure of size and distance in ROBLOX as well as a SurfaceType on BaseParts. The current studs are square shaped with a 'R' insignia on it representing the "R" in ROBLOX. The studs initially started with a circular shape (while still keeping the "R"), but then it was changed to the newer square studs due to a threat of copyright infringement from the LEGO company.

Studs can connect to Inlet, Universal, and Weld surfaces.

History
2005: Studs are square and the studs look popped out instead of in.2006-2009: Studs don't look popped out anymore and studs became circle studs similar to LEGO. Early 2009: Studs don't look like LEGO anymore but instead, have become square and the "R" symbol is gone. 2009-2013: The "R" symbol is back on the square studs. 2013-2015: Square studs updated. 2015 maintenance page: Released, studs are similar to Blockland's. 2014/2015-present: The outlines on studs became more shaded.

Trivia

 * The old ROBLOX studs look similar to the LEGO studs.
 * ROBLOX was sued by the LEGO Company for circle studs so ROBLOX switched to square to prevent a shut down. This was later proven false. Even if it was true, the LEGO company does not have a patent on the LEGO brick.
 * The ROBLOX studs also appear similar to the Blockland studs, except that Blockland made their square shaped studs before ROBLOX did (possibly to avoid infringement as well).
 * Some people dislike the new square studs, and will make textures that resemble or are the same as the old circular ones.
 * Studs are also used in measuring. For example, a ROBLOXian is 5 studs tall.
 * According to the Roblox Blog, 1 meter is equal to 20 ROBLOX studs, so a stud is 5 centimeters, and a real-life ROBLOXian (that is 5 studs tall) would be 25 centimeters, about 10 inches tall.
 * Some users don't like the new square studs.