Change the default values of the actually selected lgsp configruation file
lgsp.cfg.inc

"MME_ID" => " ", /* identifier of the subsite grouping mainmenu entry */
/* (1) some default values for writing the pages of the subsite */
"AUTHOR" => " ", /* default author of the (mainmenu entry) subsite */
"TITLE" => " ", /* default window title of the (mainmenu entry) subsite */
"ABSTRACT" => " ", /* short (mainmenu entry) subsite specification */
"DESCRIPTION" => " ", /* long (mainmenu entry) subsite specification */
"KEYWORDS_EN" => " ", /* english keywords of this (mainmenu entry) subsite */
"KEYWORDS_FREE" => " ", /* foreign language keywords of this (mainmenu entry) subsite */
"KEYWORDS_FREE_LANGUAGE" => " ", /* type of the used foreign language */
"BACKGROUND_PICTURE" => " ", /* the (mainmenu entry) subsite background picture */
"BACKGROUND_COLOR" => " ", /* the (mainmenu entry) subsite background color */
"TEXT_COLOR" => " ", /* text color of this (mainmenu entry) subsite */
"LINK_COLOR" => " ", /* color for still unvisited links of this (mainmenu entry) subsite */
"VLINK_COLOR" => " ", /* color for already visited links of this (mainmenu entry) subsite */
"ALINK_COLOR" => " ", /* color for just active links of this (mainmenu entry) subsite */
"HOVER_COLOR" => " ", /* color for mouse-over-links of this (mainmenu entry) subsite */
/* (2) valuesfor writing the index pages of this (mainmenu entry) subsite */
"MENU_AREA_HEIGHT" => " ", /* the height of of the main-menu-area */
"GUIDE_AREA_WIDTH" => " ", /* the width of of the sub-menu-area */
/* (3) values for writing the logo pages of this (mainmenu entry) subsite */
"LOGO_TOP_MARGIN" => " ", /* distance between window-border and top logo-border */
"LOGO" => " ", /* logofile (must be copied into SITE_ID/IMG_DIR) */
/* (4) values for writing the menu pages of this (mainmenu entry) subsite */
"MAIN_MENU_TOP_MARGIN" => " ", /* distance between window-border and top menu-border */
"HEADLINE" => " ", /* text or url which appears above of the mme-entries */
"HEADPICTURE" => " ", /* image which appears above of the mme-entries */
"MME_BGSTRIPE_COLOR" => " ", /* specific background-colors for the main-menu-entry */
"MME_BGSTRIPE_SIZE" => " ", /* size of the background-strip containing BGSTRIPE_COLOR */
"MME_TEXT" => " ", /* main-menu-entry (appears as text or as alt-tag of a button) */
"ENABLED_BUTTON" => " ", /* button for selecting the main-menu-entry */
"MOUSEOVER_BUTTON" => " ", /* button which appears if the mouse is over normal button */
"MOUSEDOWN_BUTTON" => " ", /* button which appears if the normal button has been touched */
"DISABLED_BUTTON" => " ", /* button which appears if the mme has already been selected */
"SUBLINE" => " ", /* all main-menu entries which constitute a sub-site */
"SUBPICTURE" => " ", /* image which appears under the mme-entries */
/* (5) values for writing the guide pages of this (mainmenu entry) subsite */
"MME_MARKER" => " ", /* button which appears before each mme-entry in the guide-area */
"WITH_IMPRESSUM" => " ", /* insert a permanently visible link to an impressum-file */