typedef enum { ... } SilcBufferParamType;

    Buffer parameter types.  These are not needed when formatting or
    unformatting buffers.  Use the macros such as SILC_STR_UI_CHAR and
    others instead.  These types may be used when describing what a
    buffer looks like, and how it may be formatted and unformatted.

    typedef enum {
      SILC_PARAM_SI8_CHAR,             /* Signed 8-bit char */
      SILC_PARAM_UI8_CHAR,             /* Unsigned 8-bit char */
      SILC_PARAM_SI16_SHORT,           /* Signed 16-bit int */
      SILC_PARAM_UI16_SHORT,           /* Unsigned 16-bit int */
      SILC_PARAM_SI32_INT,             /* Signed 32-bit int */
      SILC_PARAM_UI32_INT,             /* Unsigned 32-bit int */
      SILC_PARAM_SI64_INT,             /* Signed 64-bit int */
      SILC_PARAM_UI64_INT,             /* Unsigned 64-bit int */
      SILC_PARAM_UI8_STRING,           /* String (max len 8-bits)*/
      SILC_PARAM_UI16_STRING,          /* String (max len 16-bits) */
      SILC_PARAM_UI32_STRING,          /* String (max len 32-bits) */
      SILC_PARAM_BUFFER,               /* SilcBuffer */
    
      /* Internal types */
      SILC_PARAM_DATA,                 /* Binary data */
      SILC_PARAM_UI8_NSTRING,          /* String (max len 8-bits) */
      SILC_PARAM_UI16_NSTRING,         /* String (max len 16-bits) */
      SILC_PARAM_UI32_NSTRING,         /* String (max len 32-bits) */
      SILC_PARAM_UI8_STRING_ALLOC,     /* Alloc + memcpy */
      SILC_PARAM_UI16_STRING_ALLOC,    /* Alloc + memcpy */
      SILC_PARAM_UI32_STRING_ALLOC,    /* Alloc + memcpy */
      SILC_PARAM_UI8_NSTRING_ALLOC,    /* Alloc + memcpy */
      SILC_PARAM_UI16_NSTRING_ALLOC,   /* Alloc + memcpy */
      SILC_PARAM_UI32_NSTRING_ALLOC,   /* Alloc + memcpy */
      SILC_PARAM_DATA_ALLOC,           /* Alloc + memcpy */
      SILC_PARAM_BUFFER_ALLOC,         /* Alloc + memcpy */
    
      SILC_PARAM_OFFSET,
      SILC_PARAM_ADVANCE,
      SILC_PARAM_FUNC,
    
      SILC_PARAM_UI_XNSTRING,
      SILC_PARAM_UI_XNSTRING_ALLOC,
    
      SILC_PARAM_END
    } SilcBufferParamType;