Variable processing in embedded foreign requests variable-processing-in-embedded-foreign-requests

Any $var$ references that occur anywhere within the curly braces of an embedded foreign request are substituted with matching variable definition values.

Allows embedded foreign requests to be placed in a template in an image catalog.

Variable values which are to be substituted into foreign requests typically must be double-encoded, because no re-encoding is applied before the server attempts to transmit the final foreign url.