diff --git a/api/boinc_api.C b/api/boinc_api.C
index f13f4dbaa2..056e38192a 100644
--- a/api/boinc_api.C
+++ b/api/boinc_api.C
@@ -185,7 +185,7 @@ int boinc_parse_init_data_file() {
     //
     if (!boinc_file_exists(INIT_DATA_FILE)) {
         if (standalone) {
-            safe_strncpy(aid.app_preferences, "", sizeof(aid.app_preferences));
+            safe_strncpy(aid.project_preferences, "", sizeof(aid.project_preferences));
             safe_strncpy(aid.user_name, "Unknown user", sizeof(aid.user_name));
             safe_strncpy(aid.team_name, "Unknown team", sizeof(aid.team_name));
             aid.wu_cpu_time = 1000;
diff --git a/checkin_notes b/checkin_notes
index 8a23aff52e..a62ecaec8e 100755
--- a/checkin_notes
+++ b/checkin_notes
@@ -11774,11 +11774,14 @@ David  April 22 2004
         filesys.C,h
 
 David  April 23 2004
-    - added new items to APP_INIT_DATE (for Folding@home):
+    - added new items to APP_INIT_DATA (for Folding@home):
         slot
         boinc_dir
         authenticator
+    - rename app_preferences to project_preferences in APP_INIT_DATA
 
+    api/
+        boinc_api.C
     client/
         app.C
     lib/
diff --git a/client/app.C b/client/app.C
index 43a82cefe1..f264a4fb8d 100644
--- a/client/app.C
+++ b/client/app.C
@@ -200,7 +200,7 @@ int ACTIVE_TASK::write_app_init_file(APP_INIT_DATA& aid) {
     safe_strcpy(aid.user_name, wup->project->user_name);
     safe_strcpy(aid.team_name, wup->project->team_name);
     if (wup->project->project_specific_prefs.length()) {
-        strcpy(aid.app_preferences, wup->project->project_specific_prefs.c_str());
+        strcpy(aid.project_preferences, wup->project->project_specific_prefs.c_str());
     }
     get_project_dir(wup->project, project_dir);
     relative_to_absolute(project_dir, project_path);
diff --git a/doc/api.php b/doc/api.php
index e9c0dd5286..faf278e49f 100644
--- a/doc/api.php
+++ b/doc/api.php
@@ -133,6 +133,10 @@ html_text("
         char project_preferences[4096];
         char user_name[256];
         char team_name[256];
+        char project_dir[256];
+        char boinc_dir[256];
+        char wu_name[256];
+        char authenticator[256];
         double user_total_credit;
         double user_expavg_credit;
         double team_total_credit;
@@ -146,6 +150,10 @@ list_item("project_preferences", "An XML string containing
 the user's project-specific preferences.");
 list_item("user_name", " the user's 'screen name' on this project.");
 list_item("team_name", " the user's team name, if any.");
+list_item("project_dir", "absolute path of project directory");
+list_item("boinc_dir", "absolute path of BOINC root directory");
+list_item("wu_name", "name of workunit being processed");
+list_item("authenticator", "user's authenticator for this project");
 list_item("user_total_credit", " user's total work for this project.");
 list_item("user_expavg_credit", " user's recent average work per day.");
 list_item("team_total_credit", " team's total work for this project.");
diff --git a/lib/app_ipc.C b/lib/app_ipc.C
index 6dbd20cf31..da81a0ced8 100755
--- a/lib/app_ipc.C
+++ b/lib/app_ipc.C
@@ -46,8 +46,8 @@ int write_init_data_file(FILE* f, APP_INIT_DATA& ai) {
     if (strlen(ai.app_name)) {
         fprintf(f, "<app_name>%s</app_name>\n", ai.app_name);
     }
-    if (strlen(ai.app_preferences)) {
-        fprintf(f, "<app_preferences>\n%s</app_preferences>\n", ai.app_preferences);
+    if (strlen(ai.project_preferences)) {
+        fprintf(f, "<project_preferences>\n%s</project_preferences>\n", ai.project_preferences);
     }
     if (strlen(ai.team_name)) {
 		str1 = ai.team_name;
@@ -103,11 +103,11 @@ int parse_init_data_file(FILE* f, APP_INIT_DATA& ai) {
     char buf[256];
     memset(&ai, 0, sizeof(ai));
     while (fgets(buf, 256, f)) {
-        if (match_tag(buf, "<app_preferences>")) {
-            safe_strncpy(ai.app_preferences, "", sizeof(ai.app_preferences));
+        if (match_tag(buf, "<project_preferences>")) {
+            safe_strncpy(ai.project_preferences, "", sizeof(ai.project_preferences));
             while (fgets(buf, 256, f)) {
-                if (match_tag(buf, "</app_preferences>")) break;
-                safe_strcat(ai.app_preferences, buf);
+                if (match_tag(buf, "</project_preferences>")) break;
+                safe_strcat(ai.project_preferences, buf);
             }
             continue;
         }
diff --git a/lib/app_ipc.h b/lib/app_ipc.h
index f73667e310..fa221dae1d 100755
--- a/lib/app_ipc.h
+++ b/lib/app_ipc.h
@@ -87,7 +87,7 @@ public:
 //
 struct APP_INIT_DATA {
     char app_name[256];
-    char app_preferences[4096];
+    char project_preferences[4096];
     char user_name[256];
     char team_name[256];
     char project_dir[256];