Autodesk AUTOCAD 2006, Command Reference Manual, Page: 479 / 1490

3D Solid
Explodes planar surfaces into regions. Nonplanar surfaces explode into
bodies.
Arc
If within a nonuniformly scaled block, explodes into elliptical arcs.
Block
Removes one grouping level at a time. If a block contains a polyline or a
nested block, exploding the block exposes the polyline or nested block
object, which must then be exploded to expose its individual objects.
Blocks with equal X, Y, and Z scales explode into their component objects.
Blocks with unequal X, Y, and Z scales (nonuniformly scaled blocks) might
explode into unexpected objects.
When nonuniformly scaled blocks contain objects that cannot be exploded,
they are collected into an anonymous block (named with a “*E” prefix) and
referenced with the nonuniform scaling. If all the objects in such a block
cannot be exploded, the selected block reference will not be exploded. Body,
3D Solid, and Region entities in a nonuniformly scaled block cannot be
exploded.
Exploding a block that contains attributes deletes the attribute values and
redisplays the attribute definitions.
Blocks inserted with MINSERT and external references (xrefs) and their
dependent blocks cannot be exploded.
Body
Explodes into a single-surface body (nonplanar surfaces), regions, or curves.
Circle
If within a nonuniformly scaled block, explodes into ellipses.
Leaders
Explodes into lines, splines, solids (arrow heads), block inserts (arrow heads,
annotation blocks), multiline text, or tolerance objects, depending on the
leader.
Multiline
Explodes into lines and arcs.
ETRANSMIT Command Line | 455