Dirt Path

Grass paths are a decorative block in the Pocket Edition, which are also in the computer edition.

Obtaining
Grass paths can only be gathered in the inventory using commands or pick block. When mined (even with a Silk Touch tool), they drop dirt.

From grass
Grass paths can be created by any type of shovel on the side or top of a grass block that has air above it. The shovel will lose 1 durability.

Natural generation
In the Pocket Edition, grass paths are naturally generated in villages, where they are used as pathways.

Usage
Grass paths are primarily used for decoration. They are a similar color to grass blocks placed in a desert or savanna biome, however a notable difference is they are only $15/16^{th}$ of a block high.

Additionally, due to the way they are made, grass paths make an ideal "navigation block" for marking a trail behind you when exploring, requiring only a shovel.