I was wondering if there is a Wiki tag to "import" the contents of
other wiki pages?

For example:
ONE BIG DOC

<import("X/A")>

<import("X/B")>

<import("X/C")>

END OF ONE BIG DOC

We want to have individual pages for sections of a single "document" -
requirements, analysis, design, testing - yet want the ability to
view/print all the sections together when a single document is
necessary.

Thanks,
Andrew