# OBJ
"v "
"vn "
"vt "
"f "
"mtllib "
"usemtl "

# GLTF (JSON)
"asset"
"scene"
"scenes"
"nodes"
"meshes"
"accessors"
"bufferViews"
"buffers"

# PLY
"ply"
"format"
"element"
"property"
"vertex"
"face"

# STL
"solid"
"facet"
"normal"
"outer loop"
"vertex"
"endloop"
"endfacet"
"endsolid"

# Collada (XML)
"COLLADA"
"library_geometries"
"library_visual_scenes"