Added more code comments around the tile count constant.
Added more code comments around the tile count constant.

iOSTestApps/bridges,nagyistoce/bridges,nagyistoce/bridges,zgrossbart/bridges,zgrossbart/bridges,iOSTestApps/bridges,nagyistoce/bridges,iOSTestApps/bridges,nagyistoce/bridges,iOSTestApps/bridges,zgrossbart/bridges