.CHART SET CURRENT

This subroutine is called to switch the context of the "current" chart spec to a previously initialized chart spec.

Usage:

      PASS         <chart_spec_name>          FIELD            SHARE? N
      GOSUB    CHT .CHART SET CURRENT
      *        Check for error
      IF       CHT .CHART SET CURRENT         NE

Description:

<chart_spec_name> identifies the name of a previously initialized chart spec which is to become the "current" chart spec.

Passing this parameter is optional.

If the <chart_spec_name> parameter is not passed, then the "unnamed" chart becomes the "current" chart.

If the <chart_spec_name> parameter is passed, then the chart spec with the specified name becomes the "current" chart.

This subroutine sets a result value in the corresponding results Token field.

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-- SteveFrizzell - 2010-03-17