diff --git a/docs/api/custom-platform.md b/docs/api/custom-platform.md
index c47c5b79..5970309a 100644
--- a/docs/api/custom-platform.md
+++ b/docs/api/custom-platform.md
@@ -4,6 +4,9 @@
 
 Every platform is defined in an `.ini` file with an appropriate name.
 
+As an extension, multiline entries are supported:
+if a line ends with a backslash character, the value continues to the next line. 
+
 #### `[compilation]` section
 
 * `arch` – CPU architecture. It defines which instructions are available. Available values: 
diff --git a/src/main/scala/millfork/Platform.scala b/src/main/scala/millfork/Platform.scala
index 234f24e8..7e36ab8c 100644
--- a/src/main/scala/millfork/Platform.scala
+++ b/src/main/scala/millfork/Platform.scala
@@ -176,7 +176,7 @@ object Platform {
       }))
 
     val os = conf.getSection("output")
-    val outputPackager = SequenceOutput(os.get(classOf[String], "format", "").split("[, ]+").filter(_.nonEmpty).map {
+    val outputPackager = SequenceOutput(os.get(classOf[String], "format", "").split("[, \n\t\r]+").filter(_.nonEmpty).map {
       case "startaddr" => StartAddressOutput
       case "startpage" => StartPageOutput
       case "endaddr" => EndAddressOutput