Default DITA attributes provide for very basic formatting of images. DITA-FMx supports the use of special outputclass attribute values to leverage FrameMaker’s enhanced image layout options.
To apply special layout features to an image, add one or more of the following values to the image element’s outputclass attribute. Note that there is not a one-to-one correlation between these values and the interface options, so some experimentation will likely be needed to get exactly what you want.
fm:pos-below - Below Current Line
fm:pos-top - At Top of Column
fm:pos-bottom - At Bottom of Column
fm:pos-inline - At Insertion Point
fm:pos-runin - Run into Paragraph
fm:pos-col-left -
fm:pos-col-right -
fm:pos-col-near -
fm:pos-col-far -
fm:pos-col-inside -
fm:pos-col-outside - Outside Column
fm:pos-frame-left -
fm:pos-frame-right -
fm:pos-frame-near -
fm:pos-frame-far -
fm:pos-frame-inside -
fm:pos-frame-outside - Outside Text Frame
fm:align-left - Align left
fm:align-center - Align center
fm:align-right - Align right
fm:align-inside - Align inside
fm:align-outside - Align outside
fm:aframe-cropped - Anchored frame, cropped
fm:aframe-floating - Anchored frame, floating
fm:baseline-<UNITVAL> - Above Baseline
fm:gap-<UNITVAL> - Gap
<UNITVAL> = 60pt, 60%, etc (no space before or within <UNITVAL>)