Adobe InDesign - Manual (Page 375)

X Relative To
X Offset
Y Relative To
Y Offset
Keep Within Top/Bottom Column Boundaries
Note:
Specifies what you want to use as the basis for horizontal alignment. For instance, Text Frame lets you align the object to the left,
center, or right side of the text frame. Where exactly it aligns horizontally depends on the reference points you choose and any offset you specify
for X Offset.
For example, if you want the object to appear in the page margin with its right edge flush with the page margin, choose Page Margin for X Relative
To and specify a rightmost point on the Anchored Object Reference Point proxy and a leftmost point for the Anchored Position Reference Point
proxy.
The X Relative To option
A. Aligning the right side of the object to the left side of the text frame B. Aligning the right side of the object to the left side of the page
margin
Moves the object left or right. Whether it moves to the left or right depends on the reference point. If aligning to the center of the page
item, positive values move the object to the right. The direction of movement also depends on whether you’ve selected Relative To Spine.
Specifies what the object aligns with vertically. For example, Page Edge lets you use the edge of the page as the basis for aligning
the object to the top, center, or bottom of the page. The Anchored Position Reference Point specifies if the object aligns to the top, center, or
bottom of this page item. If you choose a line option, such as Line (Baseline), the Anchored Position Reference Point displays only the middle
horizontal row of points.
The Y Relative To option
A. Aligning the top of the object to the top page edge B. Aligning the bottom of the object to the bottom the page edge
Moves the object up or down. Positive values move the object downward.
Keeps the object inside the text column if reflowing text would otherwise cause it to move outside
of the boundaries. In such instances, the bottom of the object will align to the bottom inset, or the top of the object will align to the top inset. For
example, an anchored object off to the side of a line of text and in the middle of a column looks fine; however, without this option selected, if the
anchored marker flows to the bottom of the column, the object may drop below the column edge or partially off the page. When this option is
selected, you can’t drag the object above or below the column boundaries. If you resize the object, it will move back into alignment with the top or
bottom boundaries of the column, if necessary. This option is only available when you select a line option, such as Line (Baseline) for Y Relative
To.
When InDesign overrides the object’s position to fall within the bounds of the column, the Y offset value you specify appears in the dialog
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