diff --git a/kernelf-editor/src/commonMain/kotlin/org/modelix/editor/kernelf/Behavior_org_iets3_core_expr.kt b/kernelf-editor/src/commonMain/kotlin/org/modelix/editor/kernelf/Behavior_org_iets3_core_expr.kt
index a75f8341..ea53676f 100644
--- a/kernelf-editor/src/commonMain/kotlin/org/modelix/editor/kernelf/Behavior_org_iets3_core_expr.kt
+++ b/kernelf-editor/src/commonMain/kotlin/org/modelix/editor/kernelf/Behavior_org_iets3_core_expr.kt
@@ -10,13 +10,10 @@ import org.iets3.core.expr.base.N_ISingleSymbolRef
 import org.modelix.aspects.behavior.buildPolymorphicFunction
 
 val binaryExpressionSymbols by buildPolymorphicFunction().returns<String>().forConcept<CN_BinaryExpression>()
-    .defaultValue { ":${it.untyped().getShortName()}:" }.delegate()
+    .defaultValue { it.alias ?: ":${it.untyped().getShortName()}:" }.delegate()
 
 val ISingleSymbolRef_getSymbolName by buildPolymorphicFunction().returns<String>().forNode(C_ISingleSymbolRef).delegate()
 fun N_ISingleSymbolRef.getSymbolName() = ISingleSymbolRef_getSymbolName(this)
 
 val IRef_target by buildPolymorphicFunction().returns<N_BaseConcept>().forNode(C_IRef).delegate()
 fun N_IRef.target() = IRef_target(this)
-
-val BaseConcept_alias by buildPolymorphicFunction().returns<String>().forConcept<CN_BaseConcept>().delegate()
-fun CN_BaseConcept.alias() = BaseConcept_alias(this)
diff --git a/kernelf-editor/src/commonMain/kotlin/org/modelix/editor/kernelf/Editor_org_iets3_core_expr_base.kt b/kernelf-editor/src/commonMain/kotlin/org/modelix/editor/kernelf/Editor_org_iets3_core_expr_base.kt
index dc1895e0..2d5725ea 100644
--- a/kernelf-editor/src/commonMain/kotlin/org/modelix/editor/kernelf/Editor_org_iets3_core_expr_base.kt
+++ b/kernelf-editor/src/commonMain/kotlin/org/modelix/editor/kernelf/Editor_org_iets3_core_expr_base.kt
@@ -82,7 +82,7 @@ val Editor_org_iets3_core_expr_base = languageAspects(L_org_iets3_core_expr_base
     binaryExpressionSymbols.implement(language.OptionOrExpression) { "?:" }
     binaryExpressionSymbols.implement(L_org_iets3_core_expr_lambda.FunCompose) { ":o:" }
 
-    editor(language.BinaryExpression) {
+    editor(language.BinaryExpression, applicableToSubConcepts = true) {
         val symbol = binaryExpressionSymbols(concept)
         concept.left.cell()
         symbol.constant()
@@ -345,7 +345,7 @@ val Editor_org_iets3_core_expr_base = languageAspects(L_org_iets3_core_expr_base
         language.OrTag to "||",
         language.PlusTag to "+",
     )
-    editor(language.OperatorTag) {
+    editor(language.OperatorTag, applicableToSubConcepts = true) {
         val symbol = operatorTagSymbols[concept]
             ?: "Unknown operator tag ${concept.untyped().getLongName()}"
         symbol.constant()
@@ -395,7 +395,7 @@ val Editor_org_iets3_core_expr_base = languageAspects(L_org_iets3_core_expr_base
         }
     }
     editor(language.PrimitiveType) {
-        concept.alias().constant {
+        (concept.alias ?: concept.untyped().getShortName()).constant {
             iets3type()
         }
     }
diff --git a/kernelf-editor/src/commonMain/kotlin/org/modelix/editor/kernelf/Editor_org_iets3_core_expr_datetime.kt b/kernelf-editor/src/commonMain/kotlin/org/modelix/editor/kernelf/Editor_org_iets3_core_expr_datetime.kt
index 7bd111c9..8049588b 100644
--- a/kernelf-editor/src/commonMain/kotlin/org/modelix/editor/kernelf/Editor_org_iets3_core_expr_datetime.kt
+++ b/kernelf-editor/src/commonMain/kotlin/org/modelix/editor/kernelf/Editor_org_iets3_core_expr_datetime.kt
@@ -4,13 +4,5 @@ import org.iets3.core.expr.datetime.L_org_iets3_core_expr_datetime
 import org.modelix.aspects.languageAspects
 
 val Editor_org_iets3_core_expr_datetime = languageAspects(L_org_iets3_core_expr_datetime) {
-    BaseConcept_alias.implement(language.DateDeltaType) { "datedelta" }
-    BaseConcept_alias.implement(language.DaysDeltaType) { "days" }
-    BaseConcept_alias.implement(language.MonthsDeltaType) { "months" }
-    BaseConcept_alias.implement(language.WeeksDeltaType) { "weeks" }
-    BaseConcept_alias.implement(language.YearsDeltaType) { "years" }
-    BaseConcept_alias.implement(language.TimeDeltaType) { "timedelta" }
-    BaseConcept_alias.implement(language.HoursDeltaType) { "hours" }
-    BaseConcept_alias.implement(language.MinutesDeltaType) { "minutes" }
-    BaseConcept_alias.implement(language.SecondsDeltaType) { "seconds" }
+
 }
diff --git a/kernelf-editor/src/commonMain/kotlin/org/modelix/editor/kernelf/Editor_org_iets3_core_expr_simpleTypes.kt b/kernelf-editor/src/commonMain/kotlin/org/modelix/editor/kernelf/Editor_org_iets3_core_expr_simpleTypes.kt
index 166a9ed3..9f17c18c 100644
--- a/kernelf-editor/src/commonMain/kotlin/org/modelix/editor/kernelf/Editor_org_iets3_core_expr_simpleTypes.kt
+++ b/kernelf-editor/src/commonMain/kotlin/org/modelix/editor/kernelf/Editor_org_iets3_core_expr_simpleTypes.kt
@@ -5,11 +5,6 @@ import org.modelix.aspects.languageAspects
 import org.modelix.editor.editor
 
 val Editor_org_iets3_core_expr_simpleTypes = languageAspects(L_org_iets3_core_expr_simpleTypes) {
-    BaseConcept_alias.implement(language.BooleanType) { "boolean" }
-    BaseConcept_alias.implement(language.NumberType) { "number" }
-    BaseConcept_alias.implement(language.IntegerType) { "int" }
-    BaseConcept_alias.implement(language.RealType) { "real" }
-    BaseConcept_alias.implement(language.StringType) { "string" }
     editor(language.StringLiteral) {
         horizontal {
             textColor("DarkGreen")
@@ -25,6 +20,7 @@ val Editor_org_iets3_core_expr_simpleTypes = languageAspects(L_org_iets3_core_ex
     editor(language.NumberLiteral) {
         concept.value.cell {
             textColor("DarkMagenta")
+            regex("""[0-9]+([.][0-9]+)?""")
             validateValue { it.toDoubleOrNull() != null }
         }
     }
@@ -147,7 +143,7 @@ val Editor_org_iets3_core_expr_simpleTypes = languageAspects(L_org_iets3_core_ex
         language.RoundUpRoundingMode to "round up",
         language.TruncateRoundingMode to "truncate",
     )
-    editor(language.RoundingMode) {
+    editor(language.RoundingMode, applicableToSubConcepts = true) {
         val mode = roundingModes[concept]
             ?: "Unknown rounding mode ${concept.untyped().getLongName()}"
         mode.constant()