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I am not part of the Smalltalk definition. My instances contain information about C functions that can be called from within Smalltalk, such as number and type of parameters. This information is used by the C callout mechanism to perform the actual call-out to C routines.
| • CCallable class-instance creation: | (class) | |
| • CCallable-accessing: | (instance) | |
| • CCallable-calling: | (instance) | |
| • CCallable-restoring: | (instance) |