Typedefs starting with `d' in windoom

• D3DAppMode src/windoom.c:126
• default_t src/m_misc.c:288
• degenmobj_t src/r_defs.h:93
• doomcom_t src/d_net.h:127
• doomdata_t src/d_net.h:74
• drawseg_t src/r_defs.h:345
• DSBControl_t src/i_sound.c:90