Autodesk 00308-011408-9F30A User Guide - Page 379

optionally, a pair of extension lines. Linear dimensions include horizontal, vertical, aligned, and rotated dimensions. link To use Object Linking and Embedding (OLE) to reference data in another file. When data is linked, any changes to it in the source document are automatically updated in the destination document. See also embed. linked object An object that is a copy of the information from a source document that is placed in the destination document and has a direct link to the source document. See also embed and link. lock modifier One of five modifications that you can apply to a snap. Lock modifiers align input with the last point and are applied after the snap. See also Orthogonal lock modifier, Normal lock modifier, X-Axis lock modifier, Y-Axis lock modifier, and Unlock lock modifier. margin The area at the perimeter of a page where AutoSketch does not print. See also hard margin. marker A special type of entity used to mark a point in the drawing. marquee An area you define for reference in other operations. There are two types of marquees: rectangular and irregular. You can define marquees to copy bitmaps to the Clipboard, for reference in selection operations, to save a view, and so on. masked layer A layer on which entities are neither visible nor editable. See also background layer and editable layer. math coprocessor A chip designed to speed math-intensive programs such as AutoSketch. Math coprocessors handle math operations rapidly, freeing the main processor, or CPU, to work on other tasks. Some CPUs, such as the 486DX and Pentium processors, have math coprocessors built in. merge To add the contents of a drawing file to the current drawing. metafile See Windows metafile. Midpoint snap A snap that allows you to specify the midpoint of a line, polyline segment, and so on by clicking anywhere on it. mirror To create a reversed version of a selected entity or group of entities by reflecting it (applying a negative scaling factor) across a specified axis. MultiSnap An AutoSnap mode in which multiple snaps can be active simultaneously. This, for instance, allows you to draw a line from the endpoint of one entity to the centerpoint of another without switching snaps. See also Single Snap mode. Nearest snap A snap that allows you to select a point on an existing entity by clicking near the entity. nested symbol A symbol that contains other symbols as components. Normal lock modifier The lock modifier which restricts input to points perpendicular to an imaginary line drawn between the previous two points. See also lock modifier. numeric expression An expression that evaluates to a single numeric value. Numeric expressions can contain numbers, numeric variables, numeric functions, and operators. You can enter numeric expressions in most text boxes on the AutoSketch screen and in dialog boxes. See also expression. Glossary | 369