Trinity

Trinity Mark is a special action present in Kingdom Hearts, not to be confused with the offensive ability Trinity, the effect happens when Sora is near to a coloured Mickey Mark, the last command box will change to Trinity. Pressing it will allow Sora, Donald and Goofy to do various commands depending on the Colour of the Mickey Emblem, it can either open new paths, obtain rare treasure. Some is even required to complete Jimminy's Journal and progress the story line. A total of 5 coloured emblem can be learnt.
 * It should be noted that Trinity Mark can only be accessed when Donald and Goofy are alongside Sora. Replacing other world characters/allies, will cancel this ability.

Blue
Sora, Donald and Goofy bounce on the floor, dropping a large sum of Gil, HP orbs, MP orbs, or Items.

Red
Sora, Donald and Goofy rams to break blocked paths. Used mostly in breaking cages or walls.

Green
Sora, Donald and Goofy overlaps each other to reach something higher. Used mostly in obtaining objects stored in a high place.

Yellow
Sora, Donald and Goofy pushes and object. Mostly used to open hidden paths.

White
The trio raises and points their weapons, summoning an item box. Used mostly in obtaining treasures.

Traverse Town
Blue:
 * First District, by the World Exit.
 * First District, by the Cafe.
 * Third District, head towards the ramps on the sides of the wall, fountains.

Red:
 * First District, alleyway.
 * Second District, by the gates to the Waterway.
 * Second District, Atop the Gizmo Shop.

Green:
 * First District, Cid's Accessory Shop, Green Trinity required to gain access to Synthesis Shop.

Yellow
 * Behind Merlin's House.

White
 * Secret Waterway, along Leon.