2011

Table Of Contents
Annotative objects may have multiple scale representations on page 1406. When
visual fidelity is on, annotative objects are decomposed and scale
representations are saved (in an anonymous block on page 1388) to separate
layers. These layers are named based on their original layer and appended
with a number. If you explode the block in AutoCAD LT 2007 (or earlier
releases), and then open the drawing in AutoCAD LT 2008 (or later releases),
each scale representation becomes a separate annotative object, each with one
annotation scale. It is recommended that you do not edit or create objects on
these layers when working with a drawing created in AutoCAD LT 2008 (and
later releases) in AutoCAD LT 2007 (and earlier releases).
When visual fidelity for annotative objects is not selected, a single model
space representation is displayed on the Model tab. Depending on the setting
of the ANNOALLVISIBLE system variable, more annotation objects may be
displayed on the Model tab, and more objects may be displayed in paper space
viewports at different sizes than in AutoCAD LT 2008 and later releases.
For a procedure to set visual fidelity for annotative objects, see To save drawings
with visual fidelity for annotative objects.
Annotative Object Properties in Previous Releases
In an AutoCAD 2008 drawing, when an annotative block does not have its
paper orientation set to match the layout, and the block contains multiline
attributes that are based on a text style that is not set to match the orientation
of the layout, the attributes may shift positions if you open this drawing in
AutoCAD LT 2007 (and earlier releases).
Layer Property Overrides in Previous Releases
When you open an AutoCAD 2008 drawing containing layer property
overrides, overrides are not visible. The property override settings are retained
when the drawing is saved in a previous release, and are visible again when
the drawing is opened in AutoCAD 2008.
If a viewport containing layer property overrides is deleted when the drawing
is opened in a previous release, the override settings are not retained and are
not available when the drawing is opened in AutoCAD LT 2008.
When the VISRETAIN system variable is set to 0 when the drawing is opened
in a previous release, xref layers containing viewport property overrides are
not retained.
If you open an AutoCAD 2008 drawing in a previous release, property overrides
may display in a thumbnail image. When the drawing is saved with a layout
tab, and then opened in the previous release, those property overrides do not
display.
1298 | Chapter 33 Work with Data in Other Formats