ntk clock command implemented as ::itcl::extendedclass ::ntk::classes::clock

Syntax:

     :   '''ntk clock''' ''windowPathName'' ?''options''?

Options:
    * '''-hourcolor''' color for the hour hand (default: '''0 255 0 255''')
    * '''-minutecolor''' color for the minute hand (default: '''100 100 255 255''')
    * '''-secondcolor''' color for the second hand (default: '''255 100 100 255''')
    * '''-ringcolor''' color for the clock ring (default: '''255 255 255 255''')

MethodVariables:

    * '''afterId'''  id of the after command for clockCycle default {}

Public commands:

    * '''clockDraw'''
    * '''clockCycle''' start the clock

Inheritance:

    * theme

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