--- lbbs/include/common.h	2025/11/07 04:58:09	1.63
+++ lbbs/include/common.h	2025/11/17 02:32:42	1.65
@@ -22,6 +22,8 @@ enum common_constant_t
     SCREEN_ROWS = 24,
     SCREEN_COLS = 80,
 
+    TAB_SIZE = 4,
+
     // Network
     MAX_CLIENT_LIMIT = 2000,
     MAX_CLIENT_PER_IP_LIMIT = 100,
@@ -70,14 +72,11 @@ extern const char *data_files_load_start
 extern const int data_files_load_startup_count;
 
 // Network
-extern int socket_server[2];
-extern int socket_client;
 extern char hostaddr_client[IP_ADDR_LEN];
 extern int port_client;
 
 // SSHv2
 extern int SSH_v2;
-extern ssh_bind sshbind;
 extern ssh_session SSH_session;
 extern ssh_channel SSH_channel;