diff --git a/cspell.json b/cspell.json
index 97468b2..427c945 100644
--- a/cspell.json
+++ b/cspell.json
@@ -39,6 +39,7 @@
 		"disambiguates",
 		"dockable",
 		"domtree",
+		"Dunder",
 		"emacsclient",
 		"executablepath",
 		"Figlet",
diff --git a/pyrightconfig.json b/pyrightconfig.json
index 080d70b..b16616d 100644
--- a/pyrightconfig.json
+++ b/pyrightconfig.json
@@ -9,7 +9,88 @@
 		"**/.*"
 	],
 	"strict": [
-		"**/*.py"
+		// "**/*.py"
 	],
-	"reportOptionalMemberAccess": false
+
+	// CUSTOMIZATIONS
+	"reportOptionalMemberAccess": "warning",
+	// reportUnknownMemberType caused numerous bogus errors,
+	// with Textual's generic App[ResultType] and Screen[ScreenResultType] classes.
+	"reportUnknownMemberType": false,
+
+	// STRICT PROFILE
+	// As far as I know, there's no way to inherit from strict and then loosen any rules,
+	// so I've copied from the table and am commenting out the ones I want to change.
+	// https://github.com/microsoft/pyright/blob/2a096860c11dff7bbda92f92efb0216e2580c2c6/docs/configuration.md#diagnostic-rule-defaults
+	// > In strict type checking mode, overrides may only increase the severity level (e.g. from "warning" to "error").
+	"strictListInference": true,
+	"strictDictionaryInference": true,
+	"strictSetInference": true,
+	"analyzeUnannotatedFunctions": true,
+	"strictParameterNoneValue": true,
+	"enableTypeIgnoreComments": true,
+	"reportMissingModuleSource": "warning",
+	"reportMissingImports": "error",
+	"reportUndefinedVariable": "error",
+	"reportAssertAlwaysTrue": "error",
+	"reportInvalidStringEscapeSequence": "error",
+	"reportInvalidTypeVarUse": "error",
+	"reportMissingTypeStubs": "error",
+	"reportSelfClsParameterName": "error",
+	"reportUnsupportedDunderAll": "error",
+	"reportUnusedExpression": "error",
+	"reportWildcardImportFromLibrary": "error",
+	"reportGeneralTypeIssues": "error",
+	"reportOptionalSubscript": "error",
+	// "reportOptionalMemberAccess": "error",
+	"reportOptionalCall": "error",
+	"reportOptionalIterable": "error",
+	"reportOptionalContextManager": "error",
+	"reportOptionalOperand": "error",
+	"reportTypedDictNotRequiredAccess": "error",
+	"reportPrivateImportUsage": "error",
+	"reportUnboundVariable": "error",
+	"reportUnusedCoroutine": "error",
+	"reportConstantRedefinition": "error",
+	"reportDeprecated": "error",
+	"reportDuplicateImport": "error",
+	"reportFunctionMemberAccess": "error",
+	"reportIncompatibleMethodOverride": "error",
+	"reportIncompatibleVariableOverride": "error",
+	"reportIncompleteStub": "error",
+	"reportInconsistentConstructor": "error",
+	"reportInvalidStubStatement": "error",
+	"reportMatchNotExhaustive": "error",
+	"reportMissingParameterType": "error",
+	"reportMissingTypeArgument": "error",
+	"reportOverlappingOverload": "error",
+	"reportPrivateUsage": "error",
+	"reportTypeCommentUsage": "error",
+	"reportUnknownArgumentType": "error",
+	"reportUnknownLambdaType": "error",
+	// "reportUnknownMemberType": "error",
+	"reportUnknownParameterType": "error",
+	"reportUnknownVariableType": "error",
+	"reportUnnecessaryCast": "error",
+	"reportUnnecessaryComparison": "error",
+	"reportUnnecessaryContains": "error",
+	"reportUnnecessaryIsInstance": "error",
+	"reportUnusedClass": "error",
+	"reportUnusedImport": "error",
+	"reportUnusedFunction": "error",
+	"reportUnusedVariable": "error",
+	"reportUntypedBaseClass": "error",
+	"reportUntypedClassDecorator": "error",
+	"reportUntypedFunctionDecorator": "error",
+	"reportUntypedNamedTuple": "error",
+	"reportCallInDefaultInitializer": "none",
+	"reportImplicitOverride": "none",
+	"reportImplicitStringConcatenation": "none",
+	"reportImportCycles": "none",
+	"reportMissingSuperCall": "none",
+	"reportPropertyTypeMismatch": "none",
+	"reportShadowedImports": "none",
+	"reportUninitializedInstanceVariable": "none",
+	"reportUnnecessaryTypeIgnoreComment": "none",
+	"reportUnusedCallResult": "none",
 }
\ No newline at end of file