diff --git a/README.md b/README.md
index c7e139f..7e4a1f6 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,6 @@
 # ggf - Windows disk information tool
 
-This one is a "I like `df`. Hey, let's do something similar for Windows." case.
-
-Supports Windows XP whenever compiled with DMD.
+A lazily-written, df-like, Windows disk information tool.
 
 # Examples
 
diff --git a/ggf.d b/ggf.d
index b60e7fd..0bbb178 100644
--- a/ggf.d
+++ b/ggf.d
@@ -29,19 +29,18 @@
 extern (C)
 void version_() {
 	printf(
-		cast(char*) // Mostly constant string, only push __VERSION__
-(`ggf v`~PROJECT_VER~`  (`~__TIMESTAMP__~`)
+`ggf v` ~ PROJECT_VER~ `  (` ~ __TIMESTAMP__ ~ `)
 MIT License: Copyright (c) 2017-2018 dd86k
 Project page: <https://github.com/dd86k/ggf>
-Compiled `~__FILE__~` with `~__VENDOR__~" v%d\n"),
+Compiled `~__FILE__~` with `~__VENDOR__~" v%d\n",
 		__VERSION__);
 }
 
-__gshared bool base10; /// Use base10 notation
+__gshared byte base10; /// Use base10 notation
 
 extern (C)
 private int main(int argc, char** argv) {
-	__gshared bool features;
+	__gshared byte features;
 
 	while (--argc >= 1) {
 		if (argv[argc][0] == '-') {
@@ -60,7 +59,7 @@
 		}
 	}
 
-	// FDDs/CDs in XP shows a windows when an error occurs
+	// Empty optical drives in XP shows a windows when an error occurs
 	SetErrorMode(SEM_FAILCRITICALERRORS);
 	const DWORD drives = GetLogicalDrives;
 
@@ -75,7 +74,7 @@
 	}
 
 	__gshared char[3] cdp = ` :\`; /// buffer
-	for (uint d = 1; d <= drives; d <<= 1) {
+	for (__gshared uint d = 1; d <= drives; d <<= 1) {
 		const uint n = drives & d;
 		if (n) {
 			const char cd = getDrive(n);
@@ -150,7 +149,7 @@
 					_printfd(tb.QuadPart);
 				}
 
-				ubyte[128] vol, fs;
+				ubyte[128] vol, fs; // or memset+__gshared
 				if (GetVolumeInformationA(
 						cast(char*)cdp, cast(char*)vol, vol.sizeof,
 						NULL, NULL, NULL, cast(char*)fs, fs.sizeof)) {
@@ -158,9 +157,9 @@
 				}
 			}
 
-			puts("");
+			fputs("\n", stdout);
 		} // if (n)
-	}
+	} // for
 
 	return 0;
 }
@@ -176,8 +175,9 @@
 	TiB = GiB * 1000,
 }
 
+// lazy formatter with spacing
 extern (C)
-private void _printfd(ulong l) { // LAZY CODE (with spacing!)
+private void _printfd(ulong l) {
 	const float f = l; // like those implicit conversions?
 	if (base10) {
 		if (l >= TiB) {
@@ -211,7 +211,7 @@
  */
 extern (C)
 char getDrive(uint mask) pure {
-	final switch (mask) {
+	switch (mask) {
 	case 1: return 'A';
 	case 2: return 'B';
 	case 4: return 'C';
@@ -238,5 +238,6 @@
 	case 8388608: return 'X';
 	case 16777216: return 'Y';
 	case 33554432: return 'Z';
+	default: return '?';
 	}
 }
\ No newline at end of file