... system¹

The reference system has been changed relative to early versions of this document.

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... (VLA)²

See Item 2. of Section 19.1 for information on future availability of the VLA for VLBI co-observations.

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... VLA³

The VLA will be unavailable for VLBI observations beginning 2010 January 11, when the original VLA correlator is replaced by the EVLA WIDAR correlator. No date has been established for resumption of VLBI co-observations by the EVLA.

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... +1-575-835-extension).⁴

The area code has been changed from ``505'' to ``575'' for both the DSOC and the VLA site.

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