(entmake [entity-list])

This function allows you to write the entity-list to the database. The entity-list must be in the format, as shown by the entget function. Without a valid entity-list, entmake doesn't make the entity and returns nil.

Code	Meaning:
(entmake
'((0 . "CIRCLE")	Entity = circle
(62 . 5)	Color = blue
(10 1.2 3.4 0.0)	Center point = 1.2,3.4
(40 . 5.6)	Radius = 5.6
)
)

This function is similar to entmod. The difference is that entmake allows you to write a new list that was not previously in the database; entmod creates a new entity by modifying an existing entity.
Entmake does not require that you provide all information about the entity. Not required are dotted pair data about the entity's properties when they do not differ from default values: color, linetype, thickness, attributes-follow flag, and the entity handle.
While the data specified by entmake is very similar to DXF format, there is one primary difference: x,y,z coordinates are specified by entmake as a single value, rather than the separate values in DXF. Thus, you specify group code 10 with entmake, instead of DXF group codes 10 (x-coordinate), 20 (y-coordinate), and 30 (z-coordinate).