diff --git a/README.md b/README.md
new file mode 100644
index 0000000..e69de29
diff --git a/munin.tal b/munin.tal
index 371e342..38f8352 100644
--- a/munin.tal
+++ b/munin.tal
@@ -60,14 +60,6 @@
   &vect $2 &x $2 &y $2 &state $1 &pad1 $1
   &pad2 $2 &scrollx $2 &scrolly $2 &pad3 $2 ]
 
-( |a0 @File1 [ )
-(   &vect $2 &ok $2 &stat $2 &del $1 &append $1 )
-(   &name $2 &len $2 &r $2 &w $2 ] )
-
-( |b0 @File2 [ )
-(   &vect $2 &ok $2 &stat $2 &del $1 &append $1 )
-(   &name $2 &len $2 &r $2 &w $2 ] )
-
 |c0 @DateTime [
   &year $2 &month $1 &day $1 &hour $1 &minute $1 &second $1 &dotw $1
   &doty $2 &isdst $1 &pad $5 ]
@@ -93,6 +85,11 @@
     ;on-mouse .Mouse/vect DEO2
     ;on-controller .Controller/vect DEO2
 
+    ;on-stdin .Console/vect DEO2
+
+    ( FIXME ) save-scan-time
+
+    ( 320x256 resolution )
     #0140 .Screen/w DEO2 #0100 .Screen/h DEO2 draw-ui
     BRK
 
@@ -103,12 +100,30 @@
 
 @on-stdin ( -> BRK )
     .Console/stdin DEI #0a EQU ?on-newline
-    .Console/stdin DEI ;buffer/ptr LDA2 STA
-    ;buffer/ptr LDA2k INC2 SWP2 STA2 BRK
+    .Console/stdin DEI save-char BRK
 
 @on-newline ( -> BRK )
-    ( TODO: do something )
-    reset-buffer BRK
+    #00 save-char ;buffer readln reset-buffer BRK
+
+@readln ( s* -> )
+    LIT "? .Console/stdout DEO
+    minutes-since-scan LIT "0 ADD .Console/stdout DEO
+    #0a .Console/stdout DEO
+    save-scan-time
+    LIT "< .Console/stdout DEO .Console/stdout !println
+
+@sendln ( s* -> )
+    LIT "> .Console/stdout DEO
+    DUP2 .Console/stdout println
+    .Console/proc-put !println
+
+@println ( s* d^ -> )
+    STH &loop LDAk ?{ POP2 #0a STHr DEO JMP2r } LDAk STHkr DEO INC2 !&loop
+
+@save-char ( c^ -> )
+    ;buffer/ptr LDA2 STA
+    ;buffer/ptr LDA2k INC2 SWP2 STA2
+    JMP2r
 
 @reset-buffer ( -> )
     ;buffer ;buffer/ptr STA2 JMP2r
@@ -275,10 +290,24 @@
     STH2kr STA INC2 INC2 INC2r                   ( buf+2* [dst+1*] ; dst<-byte )
     LDAk #20 EQU ?{ INC2 !&do } POP2 STH2r JMP2r ( buf+k* [dst+1*] )
 
+( last scan: "yyyy-mm-dd hh:mm" 16 chars )
+@save-scan-time ( -> )
+    .DateTime/year DEI2 .scan-year STZ2
+    .DateTime/month DEI .scan-month STZ
+    .DateTime/day DEI .scan-day STZ
+    .DateTime/hour DEI .scan-hour STZ
+    .DateTime/minute DEI .scan-minute STZ
+    JMP2r
+
+( lower bound on time since last scan; ignores hours/days/etc. )
+@minutes-since-scan ( -> min^ )
+    .DateTime/minute DEI .scan-minute LDZ
+    LTHk ?&wrap SUB JMP2r
+    &wrap SUB #c4 SUB JMP2r
+
 @hexdigit ( c^ -> h^ )
     LIT "0 SUB DUP #0a LTH ?{ #27 SUB } JMP2r
 
-
 ( > scan_results )
 ( bssid / frequency / signal level / flags / ssid )
 ( 70:73:cb:b8:ce:b7       2437    -60     [WPA2-PSK-CCMP][ESS]    timecrimes )
@@ -286,6 +315,7 @@
 ( dBm to percentage mapping )
 ( see https://www.intuitibits.com/2016/03/23/dbm-to-percent-conversion/ )
 @table
+    64                            (  -0: 100% )
     64 64 64 64 64 64 64 64 64 64 (  -1 to  -10 dBm: 100% )
     64 64 64 64 64 64 64 64 64 64 ( -11 to  -20 dBm: 100% )
     63 63 63 62 62 62 61 61 60 60 ( -21 to  -30 dBm: 99 to 96% )
@@ -299,6 +329,9 @@
 
 @tiles ~tiles.tal
 
+( buffer one line of input, until "\n"; up to 512 bytes )
+@buffer [ $200 &ptr =buffer ]
+
 ( scan-line [43 bytes]: )
 ( - bssid, 6 bytes )
 ( - frequency, 2 bytes )
@@ -310,8 +343,17 @@
 (   + 0x03 other )
 ( - ssid, 33 bytes )
 
-( buffer one line of input, until "\n"; up to 512 bytes )
-@buffer [ $200 &ptr :buffer ]
+( store results, 43 bytes per entry; 11008 bytes means 256 entries )
+( @networks [ $2b00 &ptr =networks ] )
+$2100
+@networks
+    1122 3344 5566 ff 30 02 "RadioX $1b
+    3e42 9f11 6733 ee 35 02 "interzone $18
+    3e42 9f11 6733 ee 40 02 "bee_happy_ $17
+    3e42 9f11 6733 ee 33 02 "DuckHunt $19
+    3e42 9f11 6733 ee 45 02 "LINKSYS6672 $16
+    3e42 9f11 6733 ee 50 02 "Public $1b
+    3e42 9f11 6733 ee 55 02 "Q-bert $1b
+    3e42 9f11 6733 ee 70 02 "xyzzy $1c
 
-( store results, 33 bytes per entry; 8448 bytes means 256 entries )
-@networks [ $2100 &ptr :networks ]
+    &ptr =networks ( FIXME )