There are three kinds of context properties:
Context properties specific to CS-Library
Context properties specific to Client-Library
Context properties specific to Server-Library
cs_config sets and retrieves the values of CS-Library-specific context properties. With the exception of CS_LOC_PROP, properties set through cs_config affect only CS-Library. CS-Library-specific context properties are listed on the reference page for cs_config in the Open Client and Open Server Common Libraries Reference Manual.
ct_config sets and retrieves the values of Client-Library-specific context properties. Properties set through ct_config affect only Client-Library. Client-Library-specific context properties are listed in Table 2-28.
srv_props sets and retrieves the values of Server-Library-specific context properties. Properties set through srv_props affect only Server-Library.