Anchor
...
Text
There is no no Text page page in dimension dimension Properties, but parameters can be set in the Selection Info palette. For details on on Text parameters parameters, see see Text Properties.
...
Format
Controls the shape of dimension arrows and the position of text relative to the dimension line. 
Variable Name and Value: If If the dimension is produced as a result of of Auto Dimensions (most commonly used together with with Auto Constraints), the dimension will have a variable name and value assigned to it. This value appears in in Properties / Format window window, as well as the Calculator Palette.
...
Note: See See Auto DimensionAuto Constraint and and Calculator Palette - Variables.
...
DiAnchor 493 493 mension Dimension Size Scale: The The scaling factor for displaying the dimension.AAnchor
Arc Length: Available for Available for Angular dimension dimension, displays the arc length rather than degree measurement.AsAnchor
Associative Dimension: Checked Checked by default. Associative dimensions retain their positions and the dimension text will update when their associated object changes. To tell whether a dimension is associative, select the object. Any dimension associated with the object will be colored blue. SeeAssociative Dimensions.
...
Note:This This parameter is only available when setting the default properties of dimension tools (seesee Object Properties). You will not see it in theProperties window window for a selected dimension. This parameter must be set before the dimension is created.ArAnchor
...
Arrowheads:
1st and 2nd: Select Select arrow shapes for the start and end of the dimension.
Leader: Select Select the arrow shape for leader dimensions.
Size: Length Length of the arrowhead or diameter of the dot.*TicAnchor
Tick Extension: specify the length of the tick extension line.
You can specify a custom user defined arrowhead. User defined arrow heads are based by selecting a block. 
Text:
Text Style: Select Select the Text style for the dimension. Text styles are specified in the Style Manager.
Height: Sets Sets the height of the dimension text.
Font: Specifies Specifies the font use in the dimension text.
Color: Sets Sets the color of the dimension text.
Frame around text: Draws Draws a rectangular frame around the dimension text.
Fill Color: Specifies Specifies a color which will fill the text frame. The options are: None, Background and Custom. Background fills the frame with the background color. Custom allows you to select a color.TeAnchor
Text Position: Controls Controls the dimension text position:
Text Movement: These These options control how the dimension text is moved when editing the dimension. See See Editing Dimensions.HoriAnchor
Horizontal: Select the text alignment with respect to witness lines. The preview window displays each option. Options vary for dimension and leader text. 
Dimen
Anchor
Dimensions - Centered 
DimeAnchor
Dimensions - First Extension Line
Dime
Dimensions - Second Extension Line
Dimens
Dimensions - Over First Extension Line 
DimenAnchor
Dimensions - Over Second Extension Line 
Leader
Leaders - Default Justification(Depends on the leader orientation) 
Lea
Leaders - Center Justification 
Le
Leaders - Left Justification 
Le
Leaders - Right JustificationVertianchor
509
509 calVertical: Select Select the text alignment with respect to the dimension/leader line. Outside places places the text on the side of the dimension/leader line opposite the selected dimension/leader points. 
AboAnchor
On
O
Above
On Line
Outside
Text Gap: The distance between the dimension text and the dimension line.AdjuAnchor
Adjustment: Available for VerticalOnLine position position, The distance of the text above or below the dimension line. A value of zero (default) will place the text on the same level as the dimension line. Higher values move the text above the line; lower (negative) values move the text below the line.ForAnchor
Force Text Horizontal: Makes Makes the dimension text horizontal no matter how the dimension is rotated.ForAnchor
Force Text Inside Extension Line: Keep Keep dimension text between the extension lines, regardless of the distance between the extension lines. If unchecked, the system will decide where to place text.
...
Advanced Format
Options for drawing and scaling the dimension and extension lines. 
Dimension Line:
The line over which the dimension text is located.ForAnchor
Force Interior Line: If If checked, the dimension will have an interior dimension line even if the text is outside the extension lines. If unchecked, the interior dimension line will be drawn only if the dimension text is inside the extension lines.BaseAnchor
Baseline Increment: The The distance between each dimension in a series of baseline dimensions.
Do not Draw: Options Options for omitting parts of the dimension line.
Color: Sets Sets the color of the dimension line.
Line Width: Sets Sets the Line width for the dimension line.
Line Type: Specifies Specifies the line type for the dimension line.
Extension Line:
Lines that connect the dimension line to the object being dimensioned.DraAnchor
Draw as Spline: If If checked, the the Leader tool tool will use a spline rather than a line to attach the dimension text to the corresponding drawing location. See See Splines and Bezier Curves.ExAnchor
Extension: The length of the extension line segments that extend outward beyond the dimension lines.OffAnchor
Offset: The distance between the extension lines and the dimensioned object.
Do not Draw: Options Options for omitting parts of the extension lines.
Color: Sets Sets the color of the extension lines.
Line Width: Sets Sets the line width for the extension lines.
Line Type: Specifies Specifies the line type for the extension lines.
Generate Fixed-Length – Use the Length field to fix the length of the maximum drawn length for extension lines.
Length - Specify the length used by the Generate Fixed-Length property.
Leader Text Frame:
Available only for for Leader dimensions dimensions. Select a shape for the closed line bounding the dimension text.
Size: When When Circle or or Quadrate is is selected for the text box, define the box size.FAnchor
Fit to Text: Check Check if you want the text box to fit the dimension text.
...
Units - Tolerance
Parameters for formatting the appearance of dimension text, and for controlling the display of tolerance - the allowable deviation from the dimension. 
PrAnchor
Primary Units:
Append Units: If checked, the dimension text will display its unit. *
Units: If If Append Units is is checked, select the desired units.
Format: Options Options for how the dimension text is displayed (decimal, feet, radians, surveyor, etc.).
Prefix, Suffix: Add Add a prefix and/or a suffix to the dimension text. (Not available for for Leader dimensions dimensions.)
Scale: Change Change the scale of the value displayed by the dimension text relative to World units. For example, if you enter a value of 0.1, the dimension will display a value of 0.1 inch when dimensioning a distance of 1 inch in World units. The default value for the linear measurement scale is 1.
...
Note: You will probably want to leave Scale unchanged, unless you have an inset in your drawing that uses a different scale than the rest of your drawing.
...
RAnchor 528 528 ound Round Off: -The decimal place to which the dimension text will round off. If you type a value of 0.1, for example, the text will be rounded off to tenths.
Special Symbol: Prepends Prepends a symbol to the dimension text. The options include: None, Diameter, Degree, and Plus Minus.PreAnchor
Precision: The level of accuracy, represented by a number between 1 and 10.TrAnchor
Trailing Zeros: is set to 4, and *and Round Off is set to 4, the dimension text will read 2.3400.
...
Note: Trailing Zeros, Round Off, and Precision are interrelated, and need to be considered as a group when establishing dimension settings. If Round Off is less than Precision, dimension text may not accurately reflect the exact measurement. If Round Off is greater than Precision, then Trailing Zeros will show the additional available precision if Trailing Zeros is set to a value equal to Precision. For most applications, Precision and Round Off should be set to the same level (a Precision of 4 is the same as a Round Off of 0.0001). Trailing Zeros should then be used if necessary to display the level of precision in use. Trailing Zeros is not applicable when fractions are used.
...
Leading Zeros: For For dimensions of less than one unit, a zero will appear at the beginning of the dimension. For example: 0.5 feet, as opposed to .5 feet.
Zero Feet, Zero Inches: Relevant Relevant for architectural and engineering units. For dimensions less than one foot or one inch, the zero will appear as a placeholder. For example: 0'-0 1/4" as opposed to 1/4".TolerAnchor
Tolerance:
Append: If If checked, the dimension text will include a tolerance.As LAnchor
As Limits: If checked, the dimension will be shown as a pair of values defining the limits of the dimension value.RelAnchor
Relative Height: The The height of the tolerance relative to the rest of the dimension text.
Upper, Lower: Values Values for positive and negative tolerance.
The remaining tolerance parameters are the same as for for Primary Units.
...
Alternate Units
Alternate units are a secondary set of units for each dimension, such as 1" [25.4mm]. 
Use alternate units: If If checked, the dimension and/or tolerance will be displayed with a value in alternate units, in square brackets following the primary dimension. The parameters are the same as on the the Units / Tolerance page page.