diff --git a/scsh/scsh-interfaces.scm b/scsh/scsh-interfaces.scm
index 8698ae7..7a86246 100644
--- a/scsh/scsh-interfaces.scm
+++ b/scsh/scsh-interfaces.scm
@@ -328,8 +328,8 @@
 	  wait/poll
 	  wait/stopped-children
 
-	  ;sleep
-	  ;sleep-until
+	  process-sleep
+	  process-sleep-until
 
 	  call-terminally
 	  halts?))
@@ -593,7 +593,8 @@
 	  deprecated-proc
 	  deposit-bit-field
 	  real->exact-integer
-	  make-reinitializer))
+	  make-reinitializer
+	  run-as-long-as))
 
 (define-interface weak-tables-interface
   (export make-weak-table weak-table-set! weak-table-ref weak-table-walk
diff --git a/scsh/scsh-package.scm b/scsh/scsh-package.scm
index d0c0671..5c08e13 100644
--- a/scsh/scsh-package.scm
+++ b/scsh/scsh-package.scm
@@ -34,7 +34,8 @@
 
 (define-structure scsh-utilities scsh-utilities-interface
   (open bitwise error-package loopholes let-opt scheme define-record-types 
-	records)
+	records
+	threads threads-internal placeholders)
   (files utilities)
 ;  (optimize auto-integrate)
   )
@@ -297,6 +298,7 @@
 	error-package
 	evaluation
 	extended-ports
+	fluids
 	interfaces
 	scsh-events                     
 	low-interrupt