interface(EnvVar)
implementation(EnvVar)
implementation(EnvVar_ux)
interface(OSError)
interface(OSError_ux)
implementation(OSError_ux)
interface(ProgName)
implementation(ProgName_ux)
interface(Stop)
implementation(Stop)
implementation(Stop_ux)
interface(TimeDate)
interface(TimeDate_ux)
implementation(TimeDate_ux)
interface(TimeElapsed)
implementation(TimeElapsed_ux)
