Here is a list of all documented struct and union fields with links to the struct/union documentation for each field:

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• OCDBPGEN : Picop
• OCDCCNT : Picop
• OCDCOF : PICOP_CMD_Type
• OCDCONFIG : Picop
• OCDCONTROL : Picop
• OCDEN : PICOP_OCDCONTROL_Type
• OCDFEAT : Picop
• OCDPC : Picop
• OCDSTATUS : Picop
• OE : GCLK_GENCTRL_Type
• OFFCOMP : ADC_SAMPCTRL_Type
• OFFSETCORR : Adc , ADC_DSEQCTRL_Type , ADC_DSEQSTAT_Type , ADC_OFFSETCORR_Type , ADC_SYNCBUSY_Type
• OFR : Gmac
• OFRX : GMAC_OFR_Type
• ONDEMAND : ADC_CTRLA_Type , EVSYS_CHANNEL_Type , OSC32KCTRL_XOSC32K_Type , OSCCTRL_DFLLCTRLA_Type , OSCCTRL_DPLLCTRLA_Type , OSCCTRL_XOSCCTRL_Type , SUPC_VREF_Type , TC_CTRLA_Type
• ONESHOT : TC_CTRLBCLR_Type , TC_CTRLBSET_Type , TCC_CTRLBCLR_Type , TCC_CTRLBSET_Type
• OOV : GCLK_GENCTRL_Type
• OP : GMAC_MAN_Type
• OPD : SDHC_MC1R_Type
• OPMODE2 : USB_DEVICE_CTRLB_Type
• OPTCODE : QSPI_INSTRCTRL_Type
• OPTCODEEN : QSPI_INSTRFRAME_Type
• OPTCODELEN : QSPI_INSTRFRAME_Type
• ORHI : Gmac
• ORLO : Gmac
• OSC32KCTRL_ : MCLK_APBAMASK_Type , PAC_INTFLAGA_Type , PAC_STATUSA_Type
• OSCCTRL_ : MCLK_APBAMASK_Type , PAC_INTFLAGA_Type , PAC_STATUSA_Type
• OSCULP32K : Osc32kctrl
• OSR : DAC_DACCTRL_Type
• OTHI : Gmac
• OTLO : Gmac
• OTMX : TCC_WEXCTRL_Type
• OUT : AC_COMPCTRL_Type , PORT_OUT_Type , PortGroup
• OUTCLR : PORT_OUTCLR_Type , PortGroup
• OUTSET : PORT_OUTSET_Type , PortGroup
• OUTTGL : PORT_OUTTGL_Type , PortGroup
• OVERRUN : ADC_INTENCLR_Type , ADC_INTENSET_Type , ADC_INTFLAG_Type , DAC_INTENCLR_Type , DAC_INTENSET_Type , DAC_INTFLAG_Type
• OVERRUN0 : DAC_INTENCLR_Type , DAC_INTENSET_Type , DAC_INTFLAG_Type
• OVERRUN1 : DAC_INTENCLR_Type , DAC_INTENSET_Type , DAC_INTFLAG_Type
• OVF : FREQM_STATUS_Type , PDEC_INTENCLR_Type , PDEC_INTENSET_Type , PDEC_INTFLAG_Type , RTC_MODE0_INTENCLR_Type , RTC_MODE0_INTENSET_Type , RTC_MODE0_INTFLAG_Type , RTC_MODE1_INTENCLR_Type , RTC_MODE1_INTENSET_Type , RTC_MODE1_INTFLAG_Type , RTC_MODE2_INTENCLR_Type , RTC_MODE2_INTENSET_Type , RTC_MODE2_INTFLAG_Type , TC_INTENCLR_Type , TC_INTENSET_Type , TC_INTFLAG_Type , TCC_INTENCLR_Type , TCC_INTENSET_Type , TCC_INTFLAG_Type
• OVFEO : PDEC_EVCTRL_Type , RTC_MODE0_EVCTRL_Type , RTC_MODE1_EVCTRL_Type , RTC_MODE2_EVCTRL_Type , TC_EVCTRL_Type , TCC_EVCTRL_Type
• OVR : EVSYS_CHINTENCLR_Type , EVSYS_CHINTENSET_Type , EVSYS_CHINTFLAG_Type , EVSYS_INTPEND_Type
• OVRE : PCC_IDR_Type , PCC_IER_Type , PCC_IMR_Type , PCC_ISR_Type