To make a plot

Select one photometric system,

Select two parameters,

Select one data source,

Click on "Plot CMD".

Select parameters for the Isochrones,

Click on "Plot iso".

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System	Parameters	Data sources (Number of stars)

UBV	V B-V U-B	444 ( 9)
UBV CCD	V B-V U-B	32 ( 343) 74 (2498) 289 ( 426)
VIc CCD	V V-I	88 (8024) 289 ( 573) 431 (4344)