# Methods common to all nobservers

The nobserver base type is one of two base types (the other being observer) for objects whose primary purpose to derive outputs from layers (directly or via other observers) outside of the “natural” computation of that object. `nobserver` is triggered by modification events used for logging, whereas `observer` must be polled.

## description

    some_nobs description

The description of `some_nobs` will include the `Enabled` bit (disabled indicating that events on observed objects should be ignored); and `Triggers` a list of observed objects whose modification will cause further processing.

## add_trigger

    some_nobs add_trigger stalkee...

Adds one or more objects listed as `stalkee` to the trigger list.

## rem_trigger

    some_nobs rem_trigger stalkee...

Removes one or more objects listed as `stalkee` to the trigger list.

## disable

    some_nobs disable

Start temporarily ignoring trigger modification events.

## enable

    some_nobs enable

Stop temporarily ignoring trigger modification events.