Blocks are available only to the drawing that has a library containing them. Symbols are available to all drawings. All this flexibility can get confusing, so set some work standards. You create a block by dragging objects from the drawing into the block palette. Changing a block automatically changes the references to the block that the drawing already contains.
Blocks can be associative doors and windows understand walls, for instance.
Move them, and the break in the wall moves with them. A self-healing wall tool automatically cleans up intersections. Rough spots Only occasionally does TurboCAD show the rough edges you might expect in an inexpensive CAD program. For example, walls out of the box are represented with only two lines. Enlarging sections of drawings for use as details is straightforward in a logical sense, but a bit more time-consuming than it has to be.