It was literally meant to create good resolution Vice City Stories style icons. There are also several variations of several icons. Tip: Icons don't look like pixels when you just use revc.
3 versions are available.
List: Same as VC icons VCS (VC style VCS) VCS (Custom)
Credits: Cleoude - mission icons and map icon ideas. Huggito Baggio - Map icons and map icon ideas. Ryadica926 - Hud.txd from RE:LCS and VC style VCS. SonofUgly - VCS save icons and arrows (GTA VCS HD UI Texture Pack [PPSSPP]).