diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..5acfdfc
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+# cadius disk files
+*.2mg
+# merlin assembly listings
+*_output.txt
\ No newline at end of file
diff --git a/README.md b/README.md
index d7c9061..e0a6a94 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,8 @@ Appy abstracts the tools away from a script mindset, and into a project mindset.
 
 Currently it uses an `appy.yaml` file in the current project directory. The format is as follows:
 ```
-assemble: [main.s, grafix.s, snd.s, a.s, b.s]   # <--- list of files to assemble with Merlin                  
+assemble: [main.s, grafix.s, snd.s, a.s, b.s]   # <--- list of files to assemble with Merlin   
+indent: [c.s]                                   # <--- additional files to indent when running `appy fmt`               
 disks:                                          # <--- define disks, can be more than one, handy for 140K + 800K
 - name: mydiskimage                             #   <---- each disk has a name (ProDOS volume name)
   file: mydiskimage800.2mg                      #   <---- each disk has a filename for the image it creates
@@ -45,7 +46,7 @@ disks:                                          # <--- define disks, can be more
 ```
 
 ## User Overrides
-What if your copy of Merlin32 (assembler) is in a different location than your teammates?  You can set up local binary overrides with an `appy.user.yaml` file in the same directory.  It allows the following 3 program settings:
+What if your copy of Merlin32 (assembler) is in a different location than your teammate's?  You can set up local binary overrides with an `appy.user.yaml` file in the same directory.  It allows the following 3 program settings:
 ```
 # local system settings/overrides
 programs:
diff --git a/appy.yaml b/appy.yaml
index 47f87ba..c32c619 100644
--- a/appy.yaml
+++ b/appy.yaml
@@ -1,4 +1,5 @@
 assemble: [testsrc/sp.s, testsrc/pc.s, testsrc/fmt.s]
+indent: [testsrc/fmt2.s]
 disks:
 - name: mydiskimage
   file: mydiskimage800.2mg
diff --git a/core/diskbuilder.go b/core/diskbuilder.go
index 4ea1e3f..f8fc684 100644
--- a/core/diskbuilder.go
+++ b/core/diskbuilder.go
@@ -6,14 +6,15 @@ import (
 	"os/exec"
 
 	"github.com/digarok/appy/core/project"
+	"github.com/fatih/color"
 )
 
 func CreateDisk(name string, file string, size string) {
 	fmt.Printf("Creating Disk: \"%s\" -> %s \tSize: %s\n", name, file, size)
 
-	cmd := exec.Command(project.LocalConf.Programs.Cadius, "CREATEVOLUME", file, name, size)
-	err := cmd.Run()
+	out, err := exec.Command(project.LocalConf.Programs.Cadius, "CREATEVOLUME", file, name, size).Output()
 	if err != nil {
+		color.Cyan(string(out))
 		log.Fatal(err)
 	}
 }
@@ -21,12 +22,11 @@ func CreateDisk(name string, file string, size string) {
 func AddFiles(disk project.Disk) {
 	fmt.Printf("Add files to:  \"%s\"\n", disk.Name)
 	for _, file := range disk.Files {
-		// fmt.Printf("%s ADDFILE %s %s %s\n", CadiusPath, disk.File, file.Output, file.Input)
 		fmt.Printf(" Adding file: ----->  %s\n", file.Input)
 
-		cmd := exec.Command(project.LocalConf.Programs.Cadius, "ADDFILE", disk.File, file.Output, file.Input)
-		err := cmd.Run()
+		out, err := exec.Command(project.LocalConf.Programs.Cadius, "ADDFILE", disk.File, file.Output, file.Input).Output()
 		if err != nil {
+			color.Cyan(string(out))
 			log.Fatal(err)
 		}
 	}
diff --git a/core/formatter.go b/core/formatter.go
index 09c5aaa..bc18ee9 100644
--- a/core/formatter.go
+++ b/core/formatter.go
@@ -14,6 +14,11 @@ func Format(args []string) {
 			fmt.Printf("Formatting %v\n", filename)
 			merlingo.FmtFile(filename)
 		}
+		// format all indent files in appy.yaml
+		for _, filename := range project.AppyProj.Indent {
+			fmt.Printf("Formatting %v\n", filename)
+			merlingo.FmtFile(filename)
+		}
 	} else {
 		// format all assembly files in args
 		for _, filename := range args {
diff --git a/core/project/project.go b/core/project/project.go
index 8ad3e82..3420792 100644
--- a/core/project/project.go
+++ b/core/project/project.go
@@ -13,6 +13,7 @@ type Project struct {
 	name     string
 	Disks    []Disk
 	Assemble []string
+	Indent   []string
 }
 
 type Disk struct {
diff --git a/testsrc/fmt2.s b/testsrc/fmt2.s
new file mode 100644
index 0000000..70a02af
--- /dev/null
+++ b/testsrc/fmt2.s
@@ -0,0 +1,27 @@
+* formatting test
+        org   $300 ; start
+
+main nop
+ * what about this
+
+            ; and this
+
+  sta   :jo+1
+
+
+:jo+1   lda $400
+             lda   $400
+                 rts
+
+** 24 (bit) hex to 8 (nibble) / 4 byte BCD
+** 24 (bit) hex to
+HEXDEC	mx %11
+                LDA #0		; Ensure the result is clear
+                STA DEC8+0
+                STA DEC8+1
+                STA DEC8+2
+                STA DEC8+3
+ReallyThisisaLoooooongLabelwith stal $e12000,y  ; look at this long line
+
+* TABS....
+* $D5	$0008	 sequence [Application Specific]