Which are the PWM pins on BOLT Embedded system?

I am an absolute beginner in IoT and microcontrollers etc. Going through the 2nd Module now

In BOLT Hardware description, there seems to be " 5 Pwm pins". I can’t see them on the diagram though. Can enybody shed some light? Are some of the GPIO (0-7) Pins, also doubling up as PWM pins? Or is it the ADC pins A(0-4)?
And what exactly are PWM pins, can anybody provide a link to a source?

GPIO pins 1,2,3,4,5 are PWM pins.

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