diff --git a/src/include/hlib.h b/src/include/hlib.h
index 22fd9be..eba70c7 100644
--- a/src/include/hlib.h
+++ b/src/include/hlib.h
@@ -18,6 +18,9 @@
 #define PAGE_ID(address) (U32(address) >> 12)
 #define PAGE_OFFSET(address) (U32(address) & 0xFFF)
 
+#define MIN(x, y) (x < y ? (x) : (y))
+#define MAX(x, y) (x < y ? (y) : (x))
+
 #define NULL PTR(0)
 
 extern uint32_t createFunction(char *name, int32_t(handler)(void *, uint32_t));
@@ -62,8 +65,6 @@
 extern void gets(char *buffer);
 extern void memcpy(void *from, void *to, uint32_t size);
 
-#define MAX(x, y) (x > y ? (x) : (y))
-
 #define foreach(list, type, varname, ...)                                      \
     for (ListElement *current = list; current; current = current->next) {      \
         type varname = current->data;                                          \

diff --git a/src/include/hlib.h b/src/include/hlib.h
index 22fd9be..eba70c7 100644
--- a/src/include/hlib.h
+++ b/src/include/hlib.h
@@ -18,6 +18,9 @@
 #define PAGE_ID(address) (U32(address) >> 12)
 #define PAGE_OFFSET(address) (U32(address) & 0xFFF)
 
+#define MIN(x, y) (x < y ? (x) : (y))
+#define MAX(x, y) (x < y ? (y) : (x))
+
 #define NULL PTR(0)
 
 extern uint32_t createFunction(char *name, int32_t(handler)(void *, uint32_t));
@@ -62,8 +65,6 @@
 extern void gets(char *buffer);
 extern void memcpy(void *from, void *to, uint32_t size);
 
-#define MAX(x, y) (x > y ? (x) : (y))
-
 #define foreach(list, type, varname, ...)                                      \
     for (ListElement *current = list; current; current = current->next) {      \
         type varname = current->data;                                          \
diff --git a/src/userland/hid/main.c b/src/userland/hid/main.c
index 6e8d468..c3a6350 100644
--- a/src/userland/hid/main.c
+++ b/src/userland/hid/main.c
@@ -40,18 +40,19 @@
     }
 }
 
-void startCollection(uint32_t data) {
+void startCollection(uint32_t data, uint32_t padding) {
     char *collectionType = "Vendor defined";
     if (data < sizeof(collectionTypes) / sizeof(collectionTypes[0])) {
         collectionType = collectionTypes[data];
     } else if (data < 0x80) {
         collectionType = "Reserved";
     }
-    printf("collection(%s)\n", collectionType);
+    printf("%pcollection(%s)\n", padding, collectionType);
 }
 
 void parseReportDescriptor(uint8_t *descriptor) {
     uint8_t *read = descriptor;
+    uint32_t padding = 0;
     while (1) {
         uint8_t item = *read;
         uint8_t dataSize = item & 0x3;
@@ -63,19 +64,21 @@
         case 0:
             return;
         case 1:
-            printf("Usage page: %x\n", data);
+            printf("%pUsage page: %x\n", padding, data);
             break;
         case 5:
-            printf("Logical minimum: %x\n", data);
+            printf("%pLogical minimum: %x\n", padding, data);
             break;
         case 9:
-            printf("Logical maximum: %x\n", data);
+            printf("%pLogical maximum: %x\n", padding, data);
             break;
         case 0x28:
-            startCollection(data);
+            startCollection(data, padding);
+            padding += 2;
             break;
         case 0x30:
-            printf("End collection\n");
+            padding -= 2;
+            printf("%pEnd collection\n", padding);
             break;
         }
     }

diff --git a/src/include/hlib.h b/src/include/hlib.h
index 22fd9be..eba70c7 100644
--- a/src/include/hlib.h
+++ b/src/include/hlib.h
@@ -18,6 +18,9 @@
 #define PAGE_ID(address) (U32(address) >> 12)
 #define PAGE_OFFSET(address) (U32(address) & 0xFFF)
 
+#define MIN(x, y) (x < y ? (x) : (y))
+#define MAX(x, y) (x < y ? (y) : (x))
+
 #define NULL PTR(0)
 
 extern uint32_t createFunction(char *name, int32_t(handler)(void *, uint32_t));
@@ -62,8 +65,6 @@
 extern void gets(char *buffer);
 extern void memcpy(void *from, void *to, uint32_t size);
 
-#define MAX(x, y) (x > y ? (x) : (y))
-
 #define foreach(list, type, varname, ...)                                      \
     for (ListElement *current = list; current; current = current->next) {      \
         type varname = current->data;                                          \
diff --git a/src/userland/hid/main.c b/src/userland/hid/main.c
index 6e8d468..c3a6350 100644
--- a/src/userland/hid/main.c
+++ b/src/userland/hid/main.c
@@ -40,18 +40,19 @@
     }
 }
 
-void startCollection(uint32_t data) {
+void startCollection(uint32_t data, uint32_t padding) {
     char *collectionType = "Vendor defined";
     if (data < sizeof(collectionTypes) / sizeof(collectionTypes[0])) {
         collectionType = collectionTypes[data];
     } else if (data < 0x80) {
         collectionType = "Reserved";
     }
-    printf("collection(%s)\n", collectionType);
+    printf("%pcollection(%s)\n", padding, collectionType);
 }
 
 void parseReportDescriptor(uint8_t *descriptor) {
     uint8_t *read = descriptor;
+    uint32_t padding = 0;
     while (1) {
         uint8_t item = *read;
         uint8_t dataSize = item & 0x3;
@@ -63,19 +64,21 @@
         case 0:
             return;
         case 1:
-            printf("Usage page: %x\n", data);
+            printf("%pUsage page: %x\n", padding, data);
             break;
         case 5:
-            printf("Logical minimum: %x\n", data);
+            printf("%pLogical minimum: %x\n", padding, data);
             break;
         case 9:
-            printf("Logical maximum: %x\n", data);
+            printf("%pLogical maximum: %x\n", padding, data);
             break;
         case 0x28:
-            startCollection(data);
+            startCollection(data, padding);
+            padding += 2;
             break;
         case 0x30:
-            printf("End collection\n");
+            padding -= 2;
+            printf("%pEnd collection\n", padding);
             break;
         }
     }
diff --git a/src/userland/hlib/stdio.c b/src/userland/hlib/stdio.c
index 2035921..fa0500a 100644
--- a/src/userland/hlib/stdio.c
+++ b/src/userland/hlib/stdio.c
@@ -85,6 +85,13 @@
     }
 }
 
+void putPadding(char **write, uintptr_t x) {
+    x = MIN(x, 10); // max 10 wide padding
+    for (intptr_t i = 0; i < x; i++) {
+        addChar(write, ' ');
+    }
+}
+
 uint32_t getInsertLength(char insertType, intptr_t x) {
     switch (insertType) {
     case 's':
@@ -95,6 +102,8 @@
         return 1;
     case 'i':
         return intLength(x) + (x < 0);
+    case 'p':
+        return x;
     }
     return 0;
 }
@@ -122,6 +131,8 @@
         return;
     case 'i':
         putInt(write, x);
+    case 'p':
+        putPadding(write, x);
     }
 }
 uint32_t ioManager, logFunction, keyCallback;