Tile and zoom crop and reposition a layer's texture without altering the source or the layer shape

Once a source becomes a layer’s texture, VPT gives two independent ways to show only part of it inside the layer boundary, neither of which affects the original source or other layers using it. The tile control divides the texture into halves, thirds, fourths or fifths in X and Y and selects which subdivision to show — for example 2/3 in X shows the middle third horizontally. The zoom control instead offers continuous zoom, X/Y position offset and rotation of the texture within the layer. Tile suits clean fractional splits; zoom suits arbitrary free placement, e.g. fitting a texture inside a mask.

Examples

Assign one clip to two layers; tile layer 1 to the left half and layer 2 to the right half to spread a single source across two surfaces.

Assessment

When would you use tile versus zoom to show only part of a texture? What tile setting shows the middle third of the texture horizontally?