diff --git a/app/client/aclui/ACLFormulaEditor.ts b/app/client/aclui/ACLFormulaEditor.ts
index 4fe6a5e5..b000c2ea 100644
--- a/app/client/aclui/ACLFormulaEditor.ts
+++ b/app/client/aclui/ACLFormulaEditor.ts
@@ -42,6 +42,8 @@ export function aclFormulaEditor(options: ACLFormulaOptions) {
     return [
       // The few Python keywords and constants we support.
       'and', 'or', 'not', 'in', 'is', 'True', 'False', 'None',
+      // Some grist-specific constants:
+      'OWNER', 'EDITOR', 'VIEWER',
       // The common variables.
       'user', 'rec',
       // Other completions that depend on doc schema or other rules.
diff --git a/app/common/ACLRuleCollection.ts b/app/common/ACLRuleCollection.ts
index b94a4070..41d7a91b 100644
--- a/app/common/ACLRuleCollection.ts
+++ b/app/common/ACLRuleCollection.ts
@@ -13,12 +13,12 @@ const DEFAULT_RULE_SET: RuleSet = {
   tableId: '*',
   colIds: '*',
   body: [{
-    aclFormula: "user.Access in ['editors', 'owners']",
+    aclFormula: "user.Access in [EDITOR, OWNER]",
     matchFunc:  (input) => ['editors', 'owners'].includes(String(input.user.Access)),
     permissions: parsePermissions('all'),
     permissionsText: 'all',
   }, {
-    aclFormula: "user.Access in ['viewers']",
+    aclFormula: "user.Access in [VIEWER]",
     matchFunc:  (input) => ['viewers'].includes(String(input.user.Access)),
     permissions: parsePermissions('+R-CUDS'),
     permissionsText: '+R',
@@ -36,7 +36,7 @@ const EMERGENCY_RULE_SET: RuleSet = {
   tableId: '*',
   colIds: '*',
   body: [{
-    aclFormula: "user.Access in ['owners']",
+    aclFormula: "user.Access in [OWNER]",
     matchFunc:  (input) => ['owners'].includes(String(input.user.Access)),
     permissions: parsePermissions('all'),
     permissionsText: 'all',
diff --git a/app/server/lib/ACLFormula.ts b/app/server/lib/ACLFormula.ts
index d170df81..e6f824d0 100644
--- a/app/server/lib/ACLFormula.ts
+++ b/app/server/lib/ACLFormula.ts
@@ -13,6 +13,12 @@ import {ErrorWithCode} from 'app/common/ErrorWithCode';
 import {AclMatchFunc, AclMatchInput, ParsedAclFormula} from 'app/common/GranularAccessClause';
 import constant = require('lodash/constant');
 
+const GRIST_CONSTANTS: Record<string, string> = {
+  EDITOR: 'editors',
+  OWNER: 'owners',
+  VIEWER: 'viewers',
+};
+
 /**
  * Compile a parsed ACL formula into an actual function that can evaluate a request.
  */
@@ -55,6 +61,7 @@ function _compileNode(parsedAclFormula: ParsedAclFormula): AclEvalFunc {
     case 'Const': return constant(parsedAclFormula[1] as CellValue);
     case 'Name': {
       const name = rawArgs[0] as keyof AclMatchInput;
+      if (GRIST_CONSTANTS[name]) { return constant(GRIST_CONSTANTS[name]); }
       if (!['user', 'rec', 'newRec'].includes(name)) {
         throw new Error(`Unknown variable '${name}'`);
       }